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Finding the Fourth Proportional to 7,287.88, 10,915.34 and 5,975.64

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Solution

The fourth proportional to 7,287.88, 10,915.34 and 5,975.64 is: 8,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.88 : 10,915.34 = 5,975.64 : x
  2. Step 2: Convert to fraction form
    7,287.88/10,915.34 = 5,975.64/x
  3. Step 3: Cross multiply
    7,287.88x = 10,915.34 × 5,975.64
  4. Step 4: Simplify right side
    7,287.88x = 65,226,142.32
  5. Step 5: Solve for x
    x = 65,226,142.32/7,287.88
  6. Step 6: Final answer
    x = 8,949.95

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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.