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Finding the Fourth Proportional to 8,444.32, 12,674.20 and 4,287.20

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Solution

The fourth proportional to 8,444.32, 12,674.20 and 4,287.20 is: 6,434.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,444.32 : 12,674.20 = 4,287.20 : x
  2. Step 2: Convert to fraction form
    8,444.32/12,674.20 = 4,287.20/x
  3. Step 3: Cross multiply
    8,444.32x = 12,674.20 × 4,287.20
  4. Step 4: Simplify right side
    8,444.32x = 54,336,830.24
  5. Step 5: Solve for x
    x = 54,336,830.24/8,444.32
  6. Step 6: Final answer
    x = 6,434.72

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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.