Home / 1,110.04-1,531.98-717.28

Finding the Fourth Proportional to 1,110.04, 1,531.98 and 717.28

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Solution

The fourth proportional to 1,110.04, 1,531.98 and 717.28 is: 989.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.04 : 1,531.98 = 717.28 : x
  2. Step 2: Convert to fraction form
    1,110.04/1,531.98 = 717.28/x
  3. Step 3: Cross multiply
    1,110.04x = 1,531.98 × 717.28
  4. Step 4: Simplify right side
    1,110.04x = 1,098,858.61
  5. Step 5: Solve for x
    x = 1,098,858.61/1,110.04
  6. Step 6: Final answer
    x = 989.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.