Home / 5,186.40-7,774.20-2,842.80

Finding the Fourth Proportional to 5,186.40, 7,774.20 and 2,842.80

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Solution

The fourth proportional to 5,186.40, 7,774.20 and 2,842.80 is: 4,261.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.40 : 7,774.20 = 2,842.80 : x
  2. Step 2: Convert to fraction form
    5,186.40/7,774.20 = 2,842.80/x
  3. Step 3: Cross multiply
    5,186.40x = 7,774.20 × 2,842.80
  4. Step 4: Simplify right side
    5,186.40x = 22,100,495.76
  5. Step 5: Solve for x
    x = 22,100,495.76/5,186.40
  6. Step 6: Final answer
    x = 4,261.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.