Home / 8,661.28-11,937.36-6,898.72

Finding the Fourth Proportional to 8,661.28, 11,937.36 and 6,898.72

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Solution

The fourth proportional to 8,661.28, 11,937.36 and 6,898.72 is: 9,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.28 : 11,937.36 = 6,898.72 : x
  2. Step 2: Convert to fraction form
    8,661.28/11,937.36 = 6,898.72/x
  3. Step 3: Cross multiply
    8,661.28x = 11,937.36 × 6,898.72
  4. Step 4: Simplify right side
    8,661.28x = 82,352,504.18
  5. Step 5: Solve for x
    x = 82,352,504.18/8,661.28
  6. Step 6: Final answer
    x = 9,508.12

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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.