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Finding the Fourth Proportional to 8,266.88, 12,400.32 and 4,158.08

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Solution

The fourth proportional to 8,266.88, 12,400.32 and 4,158.08 is: 6,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.88 : 12,400.32 = 4,158.08 : x
  2. Step 2: Convert to fraction form
    8,266.88/12,400.32 = 4,158.08/x
  3. Step 3: Cross multiply
    8,266.88x = 12,400.32 × 4,158.08
  4. Step 4: Simplify right side
    8,266.88x = 51,561,522.59
  5. Step 5: Solve for x
    x = 51,561,522.59/8,266.88
  6. Step 6: Final answer
    x = 6,237.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.