Home / 1,037.91-1,428.12-1,013.31

Finding the Fourth Proportional to 1,037.91, 1,428.12 and 1,013.31

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Solution

The fourth proportional to 1,037.91, 1,428.12 and 1,013.31 is: 1,394.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.91 : 1,428.12 = 1,013.31 : x
  2. Step 2: Convert to fraction form
    1,037.91/1,428.12 = 1,013.31/x
  3. Step 3: Cross multiply
    1,037.91x = 1,428.12 × 1,013.31
  4. Step 4: Simplify right side
    1,037.91x = 1,447,128.28
  5. Step 5: Solve for x
    x = 1,447,128.28/1,037.91
  6. Step 6: Final answer
    x = 1,394.27

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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.