Home / 1,512.38-2,266.81-731.28

Finding the Fourth Proportional to 1,512.38, 2,266.81 and 731.28

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Solution

The fourth proportional to 1,512.38, 2,266.81 and 731.28 is: 1,096.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.38 : 2,266.81 = 731.28 : x
  2. Step 2: Convert to fraction form
    1,512.38/2,266.81 = 731.28/x
  3. Step 3: Cross multiply
    1,512.38x = 2,266.81 × 731.28
  4. Step 4: Simplify right side
    1,512.38x = 1,657,669.16
  5. Step 5: Solve for x
    x = 1,657,669.16/1,512.38
  6. Step 6: Final answer
    x = 1,096.07

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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.