Home / 1,129.29-1,557.61-1,036.33

Finding the Fourth Proportional to 1,129.29, 1,557.61 and 1,036.33

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Solution

The fourth proportional to 1,129.29, 1,557.61 and 1,036.33 is: 1,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129.29 : 1,557.61 = 1,036.33 : x
  2. Step 2: Convert to fraction form
    1,129.29/1,557.61 = 1,036.33/x
  3. Step 3: Cross multiply
    1,129.29x = 1,557.61 × 1,036.33
  4. Step 4: Simplify right side
    1,129.29x = 1,614,197.97
  5. Step 5: Solve for x
    x = 1,614,197.97/1,129.29
  6. Step 6: Final answer
    x = 1,429.39

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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.