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Finding the Fourth Proportional to 6,472.08, 8,931.17 and 3,958.40

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Solution

The fourth proportional to 6,472.08, 8,931.17 and 3,958.40 is: 5,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472.08 : 8,931.17 = 3,958.40 : x
  2. Step 2: Convert to fraction form
    6,472.08/8,931.17 = 3,958.40/x
  3. Step 3: Cross multiply
    6,472.08x = 8,931.17 × 3,958.40
  4. Step 4: Simplify right side
    6,472.08x = 35,353,078.88
  5. Step 5: Solve for x
    x = 35,353,078.88/6,472.08
  6. Step 6: Final answer
    x = 5,462.40

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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.