Home / 1,115.28-1,545.48-1,101.36

Finding the Fourth Proportional to 1,115.28, 1,545.48 and 1,101.36

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Solution

The fourth proportional to 1,115.28, 1,545.48 and 1,101.36 is: 1,526.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.28 : 1,545.48 = 1,101.36 : x
  2. Step 2: Convert to fraction form
    1,115.28/1,545.48 = 1,101.36/x
  3. Step 3: Cross multiply
    1,115.28x = 1,545.48 × 1,101.36
  4. Step 4: Simplify right side
    1,115.28x = 1,702,129.85
  5. Step 5: Solve for x
    x = 1,702,129.85/1,115.28
  6. Step 6: Final answer
    x = 1,526.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.