Home / 1,631.87-2,252.38-1,002.55

Finding the Fourth Proportional to 1,631.87, 2,252.38 and 1,002.55

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Solution

The fourth proportional to 1,631.87, 2,252.38 and 1,002.55 is: 1,383.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.87 : 2,252.38 = 1,002.55 : x
  2. Step 2: Convert to fraction form
    1,631.87/2,252.38 = 1,002.55/x
  3. Step 3: Cross multiply
    1,631.87x = 2,252.38 × 1,002.55
  4. Step 4: Simplify right side
    1,631.87x = 2,258,123.57
  5. Step 5: Solve for x
    x = 2,258,123.57/1,631.87
  6. Step 6: Final answer
    x = 1,383.76

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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.