Home / 1,631.24-2,251.10-885.18

Finding the Fourth Proportional to 1,631.24, 2,251.10 and 885.18

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Solution

The fourth proportional to 1,631.24, 2,251.10 and 885.18 is: 1,221.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.24 : 2,251.10 = 885.18 : x
  2. Step 2: Convert to fraction form
    1,631.24/2,251.10 = 885.18/x
  3. Step 3: Cross multiply
    1,631.24x = 2,251.10 × 885.18
  4. Step 4: Simplify right side
    1,631.24x = 1,992,624.27
  5. Step 5: Solve for x
    x = 1,992,624.27/1,631.24
  6. Step 6: Final answer
    x = 1,221.54

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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.