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Finding the Fourth Proportional to 8,911.17, 12,297.71 and 4,932.65

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Solution

The fourth proportional to 8,911.17, 12,297.71 and 4,932.65 is: 6,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.17 : 12,297.71 = 4,932.65 : x
  2. Step 2: Convert to fraction form
    8,911.17/12,297.71 = 4,932.65/x
  3. Step 3: Cross multiply
    8,911.17x = 12,297.71 × 4,932.65
  4. Step 4: Simplify right side
    8,911.17x = 60,660,213.08
  5. Step 5: Solve for x
    x = 60,660,213.08/8,911.17
  6. Step 6: Final answer
    x = 6,807.21

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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.