Home / 5,704.20-7,871.78-3,186.32

Finding the Fourth Proportional to 5,704.20, 7,871.78 and 3,186.32

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Solution

The fourth proportional to 5,704.20, 7,871.78 and 3,186.32 is: 4,397.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,704.20 : 7,871.78 = 3,186.32 : x
  2. Step 2: Convert to fraction form
    5,704.20/7,871.78 = 3,186.32/x
  3. Step 3: Cross multiply
    5,704.20x = 7,871.78 × 3,186.32
  4. Step 4: Simplify right side
    5,704.20x = 25,081,986.17
  5. Step 5: Solve for x
    x = 25,081,986.17/5,704.20
  6. Step 6: Final answer
    x = 4,397.11

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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.