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Finding the Fourth Proportional to 8,642.58, 12,956.31 and 7,334.79

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Solution

The fourth proportional to 8,642.58, 12,956.31 and 7,334.79 is: 10,995.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.58 : 12,956.31 = 7,334.79 : x
  2. Step 2: Convert to fraction form
    8,642.58/12,956.31 = 7,334.79/x
  3. Step 3: Cross multiply
    8,642.58x = 12,956.31 × 7,334.79
  4. Step 4: Simplify right side
    8,642.58x = 95,031,813.02
  5. Step 5: Solve for x
    x = 95,031,813.02/8,642.58
  6. Step 6: Final answer
    x = 10,995.77

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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.