Home / 1,121.27-1,680.18-573.59

Finding the Fourth Proportional to 1,121.27, 1,680.18 and 573.59

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Solution

The fourth proportional to 1,121.27, 1,680.18 and 573.59 is: 859.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121.27 : 1,680.18 = 573.59 : x
  2. Step 2: Convert to fraction form
    1,121.27/1,680.18 = 573.59/x
  3. Step 3: Cross multiply
    1,121.27x = 1,680.18 × 573.59
  4. Step 4: Simplify right side
    1,121.27x = 963,726.05
  5. Step 5: Solve for x
    x = 963,726.05/1,121.27
  6. Step 6: Final answer
    x = 859.50

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Double scale
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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.