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Finding the Fourth Proportional to 8,482.74, 12,723.47 and 4,320.14

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Solution

The fourth proportional to 8,482.74, 12,723.47 and 4,320.14 is: 6,479.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.74 : 12,723.47 = 4,320.14 : x
  2. Step 2: Convert to fraction form
    8,482.74/12,723.47 = 4,320.14/x
  3. Step 3: Cross multiply
    8,482.74x = 12,723.47 × 4,320.14
  4. Step 4: Simplify right side
    8,482.74x = 54,967,171.69
  5. Step 5: Solve for x
    x = 54,967,171.69/8,482.74
  6. Step 6: Final answer
    x = 6,479.88

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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.