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Finding the Fourth Proportional to 8,722.16, 12,041.04 and 6,728.24

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Solution

The fourth proportional to 8,722.16, 12,041.04 and 6,728.24 is: 9,288.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.16 : 12,041.04 = 6,728.24 : x
  2. Step 2: Convert to fraction form
    8,722.16/12,041.04 = 6,728.24/x
  3. Step 3: Cross multiply
    8,722.16x = 12,041.04 × 6,728.24
  4. Step 4: Simplify right side
    8,722.16x = 81,015,006.97
  5. Step 5: Solve for x
    x = 81,015,006.97/8,722.16
  6. Step 6: Final answer
    x = 9,288.41

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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.