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Finding the Fourth Proportional to 8,626.12, 11,903.78 and 4,849.20

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Solution

The fourth proportional to 8,626.12, 11,903.78 and 4,849.20 is: 6,691.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.12 : 11,903.78 = 4,849.20 : x
  2. Step 2: Convert to fraction form
    8,626.12/11,903.78 = 4,849.20/x
  3. Step 3: Cross multiply
    8,626.12x = 11,903.78 × 4,849.20
  4. Step 4: Simplify right side
    8,626.12x = 57,723,822.10
  5. Step 5: Solve for x
    x = 57,723,822.10/8,626.12
  6. Step 6: Final answer
    x = 6,691.75

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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.