Home / 1,531.17-2,113.08-867.93

Finding the Fourth Proportional to 1,531.17, 2,113.08 and 867.93

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Solution

The fourth proportional to 1,531.17, 2,113.08 and 867.93 is: 1,197.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.17 : 2,113.08 = 867.93 : x
  2. Step 2: Convert to fraction form
    1,531.17/2,113.08 = 867.93/x
  3. Step 3: Cross multiply
    1,531.17x = 2,113.08 × 867.93
  4. Step 4: Simplify right side
    1,531.17x = 1,834,005.52
  5. Step 5: Solve for x
    x = 1,834,005.52/1,531.17
  6. Step 6: Final answer
    x = 1,197.78

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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.