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Finding the Fourth Proportional to 7,079.76, 9,770.04 and 4,247.64

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Solution

The fourth proportional to 7,079.76, 9,770.04 and 4,247.64 is: 5,861.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.76 : 9,770.04 = 4,247.64 : x
  2. Step 2: Convert to fraction form
    7,079.76/9,770.04 = 4,247.64/x
  3. Step 3: Cross multiply
    7,079.76x = 9,770.04 × 4,247.64
  4. Step 4: Simplify right side
    7,079.76x = 41,499,612.71
  5. Step 5: Solve for x
    x = 41,499,612.71/7,079.76
  6. Step 6: Final answer
    x = 5,861.73

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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.