Home / 1,125.18-1,688.13-1,059.96

Finding the Fourth Proportional to 1,125.18, 1,688.13 and 1,059.96

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Solution

The fourth proportional to 1,125.18, 1,688.13 and 1,059.96 is: 1,590.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.18 : 1,688.13 = 1,059.96 : x
  2. Step 2: Convert to fraction form
    1,125.18/1,688.13 = 1,059.96/x
  3. Step 3: Cross multiply
    1,125.18x = 1,688.13 × 1,059.96
  4. Step 4: Simplify right side
    1,125.18x = 1,789,350.27
  5. Step 5: Solve for x
    x = 1,789,350.27/1,125.18
  6. Step 6: Final answer
    x = 1,590.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.