Home / 1,631.37-2,447.18-890.53

Finding the Fourth Proportional to 1,631.37, 2,447.18 and 890.53

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Solution

The fourth proportional to 1,631.37, 2,447.18 and 890.53 is: 1,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.37 : 2,447.18 = 890.53 : x
  2. Step 2: Convert to fraction form
    1,631.37/2,447.18 = 890.53/x
  3. Step 3: Cross multiply
    1,631.37x = 2,447.18 × 890.53
  4. Step 4: Simplify right side
    1,631.37x = 2,179,279.97
  5. Step 5: Solve for x
    x = 2,179,279.97/1,631.37
  6. Step 6: Final answer
    x = 1,335.86

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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.