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Finding the Fourth Proportional to 8,400.66, 12,599.88 and 2,853.78

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Solution

The fourth proportional to 8,400.66, 12,599.88 and 2,853.78 is: 4,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.66 : 12,599.88 = 2,853.78 : x
  2. Step 2: Convert to fraction form
    8,400.66/12,599.88 = 2,853.78/x
  3. Step 3: Cross multiply
    8,400.66x = 12,599.88 × 2,853.78
  4. Step 4: Simplify right side
    8,400.66x = 35,957,285.55
  5. Step 5: Solve for x
    x = 35,957,285.55/8,400.66
  6. Step 6: Final answer
    x = 4,280.29

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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.