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Finding the Fourth Proportional to 8,771.88, 13,149.72 and 4,385.52

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Solution

The fourth proportional to 8,771.88, 13,149.72 and 4,385.52 is: 6,574.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.88 : 13,149.72 = 4,385.52 : x
  2. Step 2: Convert to fraction form
    8,771.88/13,149.72 = 4,385.52/x
  3. Step 3: Cross multiply
    8,771.88x = 13,149.72 × 4,385.52
  4. Step 4: Simplify right side
    8,771.88x = 57,668,360.05
  5. Step 5: Solve for x
    x = 57,668,360.05/8,771.88
  6. Step 6: Final answer
    x = 6,574.23

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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.