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Finding the Fourth Proportional to 7,311.46, 10,079.94 and 6,314.62

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Solution

The fourth proportional to 7,311.46, 10,079.94 and 6,314.62 is: 8,705.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,311.46 : 10,079.94 = 6,314.62 : x
  2. Step 2: Convert to fraction form
    7,311.46/10,079.94 = 6,314.62/x
  3. Step 3: Cross multiply
    7,311.46x = 10,079.94 × 6,314.62
  4. Step 4: Simplify right side
    7,311.46x = 63,650,990.72
  5. Step 5: Solve for x
    x = 63,650,990.72/7,311.46
  6. Step 6: Final answer
    x = 8,705.65

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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.