Home / 1,631.28-2,252.12-1,237.62

Finding the Fourth Proportional to 1,631.28, 2,252.12 and 1,237.62

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Solution

The fourth proportional to 1,631.28, 2,252.12 and 1,237.62 is: 1,708.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.28 : 2,252.12 = 1,237.62 : x
  2. Step 2: Convert to fraction form
    1,631.28/2,252.12 = 1,237.62/x
  3. Step 3: Cross multiply
    1,631.28x = 2,252.12 × 1,237.62
  4. Step 4: Simplify right side
    1,631.28x = 2,787,262.57
  5. Step 5: Solve for x
    x = 2,787,262.57/1,631.28
  6. Step 6: Final answer
    x = 1,708.64

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1.5x scale

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.