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Finding the Fourth Proportional to 6,447.30, 8,876.03 and 5,607.56

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Solution

The fourth proportional to 6,447.30, 8,876.03 and 5,607.56 is: 7,719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.30 : 8,876.03 = 5,607.56 : x
  2. Step 2: Convert to fraction form
    6,447.30/8,876.03 = 5,607.56/x
  3. Step 3: Cross multiply
    6,447.30x = 8,876.03 × 5,607.56
  4. Step 4: Simplify right side
    6,447.30x = 49,772,864.94
  5. Step 5: Solve for x
    x = 49,772,864.94/6,447.30
  6. Step 6: Final answer
    x = 7,719.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.