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Finding the Fourth Proportional to 8,655.84, 11,950.76 and 6,662.88

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Solution

The fourth proportional to 8,655.84, 11,950.76 and 6,662.88 is: 9,199.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.84 : 11,950.76 = 6,662.88 : x
  2. Step 2: Convert to fraction form
    8,655.84/11,950.76 = 6,662.88/x
  3. Step 3: Cross multiply
    8,655.84x = 11,950.76 × 6,662.88
  4. Step 4: Simplify right side
    8,655.84x = 79,626,479.79
  5. Step 5: Solve for x
    x = 79,626,479.79/8,655.84
  6. Step 6: Final answer
    x = 9,199.16

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Similar ratio
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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.