Home / 6,611.29-9,115.61-5,713.40

Finding the Fourth Proportional to 6,611.29, 9,115.61 and 5,713.40

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Solution

The fourth proportional to 6,611.29, 9,115.61 and 5,713.40 is: 7,877.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.29 : 9,115.61 = 5,713.40 : x
  2. Step 2: Convert to fraction form
    6,611.29/9,115.61 = 5,713.40/x
  3. Step 3: Cross multiply
    6,611.29x = 9,115.61 × 5,713.40
  4. Step 4: Simplify right side
    6,611.29x = 52,081,120.40
  5. Step 5: Solve for x
    x = 52,081,120.40/6,611.29
  6. Step 6: Final answer
    x = 7,877.61

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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.