Home / 1,115.98-1,663.33-1,107.52

Finding the Fourth Proportional to 1,115.98, 1,663.33 and 1,107.52

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Solution

The fourth proportional to 1,115.98, 1,663.33 and 1,107.52 is: 1,650.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.98 : 1,663.33 = 1,107.52 : x
  2. Step 2: Convert to fraction form
    1,115.98/1,663.33 = 1,107.52/x
  3. Step 3: Cross multiply
    1,115.98x = 1,663.33 × 1,107.52
  4. Step 4: Simplify right side
    1,115.98x = 1,842,171.24
  5. Step 5: Solve for x
    x = 1,842,171.24/1,115.98
  6. Step 6: Final answer
    x = 1,650.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.