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Finding the Fourth Proportional to 6,863.79, 10,237.68 and 6,656.12

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Solution

The fourth proportional to 6,863.79, 10,237.68 and 6,656.12 is: 9,927.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,863.79 : 10,237.68 = 6,656.12 : x
  2. Step 2: Convert to fraction form
    6,863.79/10,237.68 = 6,656.12/x
  3. Step 3: Cross multiply
    6,863.79x = 10,237.68 × 6,656.12
  4. Step 4: Simplify right side
    6,863.79x = 68,143,175.41
  5. Step 5: Solve for x
    x = 68,143,175.41/6,863.79
  6. Step 6: Final answer
    x = 9,927.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.