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Finding the Fourth Proportional to 6,660.39, 9,188.54 and 4,672.25

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Solution

The fourth proportional to 6,660.39, 9,188.54 and 4,672.25 is: 6,445.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.39 : 9,188.54 = 4,672.25 : x
  2. Step 2: Convert to fraction form
    6,660.39/9,188.54 = 4,672.25/x
  3. Step 3: Cross multiply
    6,660.39x = 9,188.54 × 4,672.25
  4. Step 4: Simplify right side
    6,660.39x = 42,931,086.71
  5. Step 5: Solve for x
    x = 42,931,086.71/6,660.39
  6. Step 6: Final answer
    x = 6,445.73

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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.