Home / 1,802.28-2,489.49-1,331.13

Finding the Fourth Proportional to 1,802.28, 2,489.49 and 1,331.13

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Solution

The fourth proportional to 1,802.28, 2,489.49 and 1,331.13 is: 1,838.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.28 : 2,489.49 = 1,331.13 : x
  2. Step 2: Convert to fraction form
    1,802.28/2,489.49 = 1,331.13/x
  3. Step 3: Cross multiply
    1,802.28x = 2,489.49 × 1,331.13
  4. Step 4: Simplify right side
    1,802.28x = 3,313,834.82
  5. Step 5: Solve for x
    x = 3,313,834.82/1,802.28
  6. Step 6: Final answer
    x = 1,838.69

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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.