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Finding the Fourth Proportional to 8,859.12, 13,280.04 and 4,245.36

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Solution

The fourth proportional to 8,859.12, 13,280.04 and 4,245.36 is: 6,363.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.12 : 13,280.04 = 4,245.36 : x
  2. Step 2: Convert to fraction form
    8,859.12/13,280.04 = 4,245.36/x
  3. Step 3: Cross multiply
    8,859.12x = 13,280.04 × 4,245.36
  4. Step 4: Simplify right side
    8,859.12x = 56,378,550.61
  5. Step 5: Solve for x
    x = 56,378,550.61/8,859.12
  6. Step 6: Final answer
    x = 6,363.90

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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.