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Finding the Fourth Proportional to 6,312.90, 8,711.82 and 3,441.61

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Solution

The fourth proportional to 6,312.90, 8,711.82 and 3,441.61 is: 4,749.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312.90 : 8,711.82 = 3,441.61 : x
  2. Step 2: Convert to fraction form
    6,312.90/8,711.82 = 3,441.61/x
  3. Step 3: Cross multiply
    6,312.90x = 8,711.82 × 3,441.61
  4. Step 4: Simplify right side
    6,312.90x = 29,982,634.20
  5. Step 5: Solve for x
    x = 29,982,634.20/6,312.90
  6. Step 6: Final answer
    x = 4,749.43

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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.