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Finding the Fourth Proportional to 8,263.11, 12,363.69 and 4,919.13

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Solution

The fourth proportional to 8,263.11, 12,363.69 and 4,919.13 is: 7,360.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,263.11 : 12,363.69 = 4,919.13 : x
  2. Step 2: Convert to fraction form
    8,263.11/12,363.69 = 4,919.13/x
  3. Step 3: Cross multiply
    8,263.11x = 12,363.69 × 4,919.13
  4. Step 4: Simplify right side
    8,263.11x = 60,818,589.17
  5. Step 5: Solve for x
    x = 60,818,589.17/8,263.11
  6. Step 6: Final answer
    x = 7,360.25

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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.