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Finding the Fourth Proportional to 7,081.16, 10,612.02 and 3,611.12

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Solution

The fourth proportional to 7,081.16, 10,612.02 and 3,611.12 is: 5,411.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.16 : 10,612.02 = 3,611.12 : x
  2. Step 2: Convert to fraction form
    7,081.16/10,612.02 = 3,611.12/x
  3. Step 3: Cross multiply
    7,081.16x = 10,612.02 × 3,611.12
  4. Step 4: Simplify right side
    7,081.16x = 38,321,277.66
  5. Step 5: Solve for x
    x = 38,321,277.66/7,081.16
  6. Step 6: Final answer
    x = 5,411.72

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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.