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Finding the Fourth Proportional to 8,480.04, 12,721.14 and 4,318.62

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Solution

The fourth proportional to 8,480.04, 12,721.14 and 4,318.62 is: 6,478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.04 : 12,721.14 = 4,318.62 : x
  2. Step 2: Convert to fraction form
    8,480.04/12,721.14 = 4,318.62/x
  3. Step 3: Cross multiply
    8,480.04x = 12,721.14 × 4,318.62
  4. Step 4: Simplify right side
    8,480.04x = 54,937,769.63
  5. Step 5: Solve for x
    x = 54,937,769.63/8,480.04
  6. Step 6: Final answer
    x = 6,478.48

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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.