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Finding the Fourth Proportional to 8,392.76, 11,581.05 and 6,713.56

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Solution

The fourth proportional to 8,392.76, 11,581.05 and 6,713.56 is: 9,263.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.76 : 11,581.05 = 6,713.56 : x
  2. Step 2: Convert to fraction form
    8,392.76/11,581.05 = 6,713.56/x
  3. Step 3: Cross multiply
    8,392.76x = 11,581.05 × 6,713.56
  4. Step 4: Simplify right side
    8,392.76x = 77,750,074.04
  5. Step 5: Solve for x
    x = 77,750,074.04/8,392.76
  6. Step 6: Final answer
    x = 9,263.95

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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.