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Finding the Fourth Proportional to 8,641.40, 12,964.82 and 6,571.31

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Solution

The fourth proportional to 8,641.40, 12,964.82 and 6,571.31 is: 9,859.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.40 : 12,964.82 = 6,571.31 : x
  2. Step 2: Convert to fraction form
    8,641.40/12,964.82 = 6,571.31/x
  3. Step 3: Cross multiply
    8,641.40x = 12,964.82 × 6,571.31
  4. Step 4: Simplify right side
    8,641.40x = 85,195,753.63
  5. Step 5: Solve for x
    x = 85,195,753.63/8,641.40
  6. Step 6: Final answer
    x = 9,859.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.