Home / 1,120.14-1,680.34-572.04

Finding the Fourth Proportional to 1,120.14, 1,680.34 and 572.04

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Solution

The fourth proportional to 1,120.14, 1,680.34 and 572.04 is: 858.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.14 : 1,680.34 = 572.04 : x
  2. Step 2: Convert to fraction form
    1,120.14/1,680.34 = 572.04/x
  3. Step 3: Cross multiply
    1,120.14x = 1,680.34 × 572.04
  4. Step 4: Simplify right side
    1,120.14x = 961,221.69
  5. Step 5: Solve for x
    x = 961,221.69/1,120.14
  6. Step 6: Final answer
    x = 858.13

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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.