Home / 3,147.20-4,717.55-1,685.96

Finding the Fourth Proportional to 3,147.20, 4,717.55 and 1,685.96

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Solution

The fourth proportional to 3,147.20, 4,717.55 and 1,685.96 is: 2,527.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.20 : 4,717.55 = 1,685.96 : x
  2. Step 2: Convert to fraction form
    3,147.20/4,717.55 = 1,685.96/x
  3. Step 3: Cross multiply
    3,147.20x = 4,717.55 × 1,685.96
  4. Step 4: Simplify right side
    3,147.20x = 7,953,581.23
  5. Step 5: Solve for x
    x = 7,953,581.23/3,147.20
  6. Step 6: Final answer
    x = 2,527.20

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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.