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Finding the Fourth Proportional to 6,458.28, 8,913.12 and 3,941.88

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Solution

The fourth proportional to 6,458.28, 8,913.12 and 3,941.88 is: 5,440.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,458.28 : 8,913.12 = 3,941.88 : x
  2. Step 2: Convert to fraction form
    6,458.28/8,913.12 = 3,941.88/x
  3. Step 3: Cross multiply
    6,458.28x = 8,913.12 × 3,941.88
  4. Step 4: Simplify right side
    6,458.28x = 35,134,449.47
  5. Step 5: Solve for x
    x = 35,134,449.47/6,458.28
  6. Step 6: Final answer
    x = 5,440.22

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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.