Home / 1,687.45-2,531.18-591.56

Finding the Fourth Proportional to 1,687.45, 2,531.18 and 591.56

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Solution

The fourth proportional to 1,687.45, 2,531.18 and 591.56 is: 887.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.45 : 2,531.18 = 591.56 : x
  2. Step 2: Convert to fraction form
    1,687.45/2,531.18 = 591.56/x
  3. Step 3: Cross multiply
    1,687.45x = 2,531.18 × 591.56
  4. Step 4: Simplify right side
    1,687.45x = 1,497,348.21
  5. Step 5: Solve for x
    x = 1,497,348.21/1,687.45
  6. Step 6: Final answer
    x = 887.35

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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.