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Finding the Fourth Proportional to 2,422.08, 3,632.04 and 861.57

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Solution

The fourth proportional to 2,422.08, 3,632.04 and 861.57 is: 1,291.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.08 : 3,632.04 = 861.57 : x
  2. Step 2: Convert to fraction form
    2,422.08/3,632.04 = 861.57/x
  3. Step 3: Cross multiply
    2,422.08x = 3,632.04 × 861.57
  4. Step 4: Simplify right side
    2,422.08x = 3,129,256.70
  5. Step 5: Solve for x
    x = 3,129,256.70/2,422.08
  6. Step 6: Final answer
    x = 1,291.97

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1.5x scale

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.