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Finding the Fourth Proportional to 8,458.02, 12,659.49 and 7,649.64

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Solution

The fourth proportional to 8,458.02, 12,659.49 and 7,649.64 is: 11,449.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.02 : 12,659.49 = 7,649.64 : x
  2. Step 2: Convert to fraction form
    8,458.02/12,659.49 = 7,649.64/x
  3. Step 3: Cross multiply
    8,458.02x = 12,659.49 × 7,649.64
  4. Step 4: Simplify right side
    8,458.02x = 96,840,541.08
  5. Step 5: Solve for x
    x = 96,840,541.08/8,458.02
  6. Step 6: Final answer
    x = 11,449.55

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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.