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Finding the Fourth Proportional to 8,778.77, 12,115.53 and 4,800.48

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Solution

The fourth proportional to 8,778.77, 12,115.53 and 4,800.48 is: 6,625.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.77 : 12,115.53 = 4,800.48 : x
  2. Step 2: Convert to fraction form
    8,778.77/12,115.53 = 4,800.48/x
  3. Step 3: Cross multiply
    8,778.77x = 12,115.53 × 4,800.48
  4. Step 4: Simplify right side
    8,778.77x = 58,160,359.45
  5. Step 5: Solve for x
    x = 58,160,359.45/8,778.77
  6. Step 6: Final answer
    x = 6,625.11

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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.