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Finding the Fourth Proportional to 6,468.90, 8,921.86 and 4,343.79

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Solution

The fourth proportional to 6,468.90, 8,921.86 and 4,343.79 is: 5,990.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,468.90 : 8,921.86 = 4,343.79 : x
  2. Step 2: Convert to fraction form
    6,468.90/8,921.86 = 4,343.79/x
  3. Step 3: Cross multiply
    6,468.90x = 8,921.86 × 4,343.79
  4. Step 4: Simplify right side
    6,468.90x = 38,754,664.53
  5. Step 5: Solve for x
    x = 38,754,664.53/6,468.90
  6. Step 6: Final answer
    x = 5,990.92

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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.