Home / 1,771.14-2,444.19-985.20

Finding the Fourth Proportional to 1,771.14, 2,444.19 and 985.20

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Solution

The fourth proportional to 1,771.14, 2,444.19 and 985.20 is: 1,359.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.14 : 2,444.19 = 985.20 : x
  2. Step 2: Convert to fraction form
    1,771.14/2,444.19 = 985.20/x
  3. Step 3: Cross multiply
    1,771.14x = 2,444.19 × 985.20
  4. Step 4: Simplify right side
    1,771.14x = 2,408,015.99
  5. Step 5: Solve for x
    x = 2,408,015.99/1,771.14
  6. Step 6: Final answer
    x = 1,359.59

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Half scale
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Double scale
Find fourth proportional to 1,772.14, 2,445.57 and 986.20
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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.