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Finding the Fourth Proportional to 9,387.88, 12,948.90 and 6,075.88

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Solution

The fourth proportional to 9,387.88, 12,948.90 and 6,075.88 is: 8,380.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387.88 : 12,948.90 = 6,075.88 : x
  2. Step 2: Convert to fraction form
    9,387.88/12,948.90 = 6,075.88/x
  3. Step 3: Cross multiply
    9,387.88x = 12,948.90 × 6,075.88
  4. Step 4: Simplify right side
    9,387.88x = 78,675,962.53
  5. Step 5: Solve for x
    x = 78,675,962.53/9,387.88
  6. Step 6: Final answer
    x = 8,380.59

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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.