Home / 1,687.16-2,531.26-591.54

Finding the Fourth Proportional to 1,687.16, 2,531.26 and 591.54

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Solution

The fourth proportional to 1,687.16, 2,531.26 and 591.54 is: 887.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.16 : 2,531.26 = 591.54 : x
  2. Step 2: Convert to fraction form
    1,687.16/2,531.26 = 591.54/x
  3. Step 3: Cross multiply
    1,687.16x = 2,531.26 × 591.54
  4. Step 4: Simplify right side
    1,687.16x = 1,497,341.54
  5. Step 5: Solve for x
    x = 1,497,341.54/1,687.16
  6. Step 6: Final answer
    x = 887.49

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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.