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Finding the Fourth Proportional to 7,909.08, 10,912.98 and 4,765.44

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Solution

The fourth proportional to 7,909.08, 10,912.98 and 4,765.44 is: 6,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.08 : 10,912.98 = 4,765.44 : x
  2. Step 2: Convert to fraction form
    7,909.08/10,912.98 = 4,765.44/x
  3. Step 3: Cross multiply
    7,909.08x = 10,912.98 × 4,765.44
  4. Step 4: Simplify right side
    7,909.08x = 52,005,151.41
  5. Step 5: Solve for x
    x = 52,005,151.41/7,909.08
  6. Step 6: Final answer
    x = 6,575.37

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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.