Home / 1,110.17-1,531.91-690.59

Finding the Fourth Proportional to 1,110.17, 1,531.91 and 690.59

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Solution

The fourth proportional to 1,110.17, 1,531.91 and 690.59 is: 952.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.17 : 1,531.91 = 690.59 : x
  2. Step 2: Convert to fraction form
    1,110.17/1,531.91 = 690.59/x
  3. Step 3: Cross multiply
    1,110.17x = 1,531.91 × 690.59
  4. Step 4: Simplify right side
    1,110.17x = 1,057,927.28
  5. Step 5: Solve for x
    x = 1,057,927.28/1,110.17
  6. Step 6: Final answer
    x = 952.94

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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.