Home / 1,521.26-2,280.45-656.18

Finding the Fourth Proportional to 1,521.26, 2,280.45 and 656.18

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Solution

The fourth proportional to 1,521.26, 2,280.45 and 656.18 is: 983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.26 : 2,280.45 = 656.18 : x
  2. Step 2: Convert to fraction form
    1,521.26/2,280.45 = 656.18/x
  3. Step 3: Cross multiply
    1,521.26x = 2,280.45 × 656.18
  4. Step 4: Simplify right side
    1,521.26x = 1,496,385.68
  5. Step 5: Solve for x
    x = 1,496,385.68/1,521.26
  6. Step 6: Final answer
    x = 983.65

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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.