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Finding the Fourth Proportional to 8,363.61, 12,539.07 and 5,075.82

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Solution

The fourth proportional to 8,363.61, 12,539.07 and 5,075.82 is: 7,609.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,363.61 : 12,539.07 = 5,075.82 : x
  2. Step 2: Convert to fraction form
    8,363.61/12,539.07 = 5,075.82/x
  3. Step 3: Cross multiply
    8,363.61x = 12,539.07 × 5,075.82
  4. Step 4: Simplify right side
    8,363.61x = 63,646,062.29
  5. Step 5: Solve for x
    x = 63,646,062.29/8,363.61
  6. Step 6: Final answer
    x = 7,609.88

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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.