Home / 1,531.17-2,112.12-941.58

Finding the Fourth Proportional to 1,531.17, 2,112.12 and 941.58

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Solution

The fourth proportional to 1,531.17, 2,112.12 and 941.58 is: 1,298.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.17 : 2,112.12 = 941.58 : x
  2. Step 2: Convert to fraction form
    1,531.17/2,112.12 = 941.58/x
  3. Step 3: Cross multiply
    1,531.17x = 2,112.12 × 941.58
  4. Step 4: Simplify right side
    1,531.17x = 1,988,729.95
  5. Step 5: Solve for x
    x = 1,988,729.95/1,531.17
  6. Step 6: Final answer
    x = 1,298.83

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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.