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Finding the Fourth Proportional to 6,885.68, 10,271.17 and 6,221.30

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Solution

The fourth proportional to 6,885.68, 10,271.17 and 6,221.30 is: 9,280.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.68 : 10,271.17 = 6,221.30 : x
  2. Step 2: Convert to fraction form
    6,885.68/10,271.17 = 6,221.30/x
  3. Step 3: Cross multiply
    6,885.68x = 10,271.17 × 6,221.30
  4. Step 4: Simplify right side
    6,885.68x = 63,899,998.81
  5. Step 5: Solve for x
    x = 63,899,998.81/6,885.68
  6. Step 6: Final answer
    x = 9,280.13

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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.