Home / 1,051.25-1,577.84-531.61

Finding the Fourth Proportional to 1,051.25, 1,577.84 and 531.61

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Solution

The fourth proportional to 1,051.25, 1,577.84 and 531.61 is: 797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.25 : 1,577.84 = 531.61 : x
  2. Step 2: Convert to fraction form
    1,051.25/1,577.84 = 531.61/x
  3. Step 3: Cross multiply
    1,051.25x = 1,577.84 × 531.61
  4. Step 4: Simplify right side
    1,051.25x = 838,799.47
  5. Step 5: Solve for x
    x = 838,799.47/1,051.25
  6. Step 6: Final answer
    x = 797.91

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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.