Home / 3,107.28-4,287.87-1,781.04

Finding the Fourth Proportional to 3,107.28, 4,287.87 and 1,781.04

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Solution

The fourth proportional to 3,107.28, 4,287.87 and 1,781.04 is: 2,457.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.28 : 4,287.87 = 1,781.04 : x
  2. Step 2: Convert to fraction form
    3,107.28/4,287.87 = 1,781.04/x
  3. Step 3: Cross multiply
    3,107.28x = 4,287.87 × 1,781.04
  4. Step 4: Simplify right side
    3,107.28x = 7,636,867.98
  5. Step 5: Solve for x
    x = 7,636,867.98/3,107.28
  6. Step 6: Final answer
    x = 2,457.73

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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.