Home / 1,502.28-2,072.86-1,128.47

Finding the Fourth Proportional to 1,502.28, 2,072.86 and 1,128.47

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Solution

The fourth proportional to 1,502.28, 2,072.86 and 1,128.47 is: 1,557.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.28 : 2,072.86 = 1,128.47 : x
  2. Step 2: Convert to fraction form
    1,502.28/2,072.86 = 1,128.47/x
  3. Step 3: Cross multiply
    1,502.28x = 2,072.86 × 1,128.47
  4. Step 4: Simplify right side
    1,502.28x = 2,339,147.14
  5. Step 5: Solve for x
    x = 2,339,147.14/1,502.28
  6. Step 6: Final answer
    x = 1,557.06

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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.