Home / 5,678.47-8,517.66-2,215.72

Finding the Fourth Proportional to 5,678.47, 8,517.66 and 2,215.72

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Solution

The fourth proportional to 5,678.47, 8,517.66 and 2,215.72 is: 3,323.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.47 : 8,517.66 = 2,215.72 : x
  2. Step 2: Convert to fraction form
    5,678.47/8,517.66 = 2,215.72/x
  3. Step 3: Cross multiply
    5,678.47x = 8,517.66 × 2,215.72
  4. Step 4: Simplify right side
    5,678.47x = 18,872,749.62
  5. Step 5: Solve for x
    x = 18,872,749.62/5,678.47
  6. Step 6: Final answer
    x = 3,323.56

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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.