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Finding the Fourth Proportional to 2,014.75, 2,780.40 and 1,130.68

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Solution

The fourth proportional to 2,014.75, 2,780.40 and 1,130.68 is: 1,560.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,014.75 : 2,780.40 = 1,130.68 : x
  2. Step 2: Convert to fraction form
    2,014.75/2,780.40 = 1,130.68/x
  3. Step 3: Cross multiply
    2,014.75x = 2,780.40 × 1,130.68
  4. Step 4: Simplify right side
    2,014.75x = 3,143,742.67
  5. Step 5: Solve for x
    x = 3,143,742.67/2,014.75
  6. Step 6: Final answer
    x = 1,560.36

Related Problems

Find fourth proportional to 1,007.38, 1,390.20 and 565.34
Half scale
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Double scale
Find fourth proportional to 2,015.75, 2,781.78 and 1,131.68
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.