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Finding the Fourth Proportional to 8,640.59, 12,960.88 and 2,400.35

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Solution

The fourth proportional to 8,640.59, 12,960.88 and 2,400.35 is: 3,600.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.59 : 12,960.88 = 2,400.35 : x
  2. Step 2: Convert to fraction form
    8,640.59/12,960.88 = 2,400.35/x
  3. Step 3: Cross multiply
    8,640.59x = 12,960.88 × 2,400.35
  4. Step 4: Simplify right side
    8,640.59x = 31,110,577.50
  5. Step 5: Solve for x
    x = 31,110,577.50/8,640.59
  6. Step 6: Final answer
    x = 3,600.52

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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.