Home / 8,663.28-11,940.12-6,900.72

Finding the Fourth Proportional to 8,663.28, 11,940.12 and 6,900.72

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Solution

The fourth proportional to 8,663.28, 11,940.12 and 6,900.72 is: 9,510.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.28 : 11,940.12 = 6,900.72 : x
  2. Step 2: Convert to fraction form
    8,663.28/11,940.12 = 6,900.72/x
  3. Step 3: Cross multiply
    8,663.28x = 11,940.12 × 6,900.72
  4. Step 4: Simplify right side
    8,663.28x = 82,395,424.89
  5. Step 5: Solve for x
    x = 82,395,424.89/8,663.28
  6. Step 6: Final answer
    x = 9,510.88

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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.