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Finding the Fourth Proportional to 5,718.12, 8,570.12 and 3,375.75

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Solution

The fourth proportional to 5,718.12, 8,570.12 and 3,375.75 is: 5,059.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.12 : 8,570.12 = 3,375.75 : x
  2. Step 2: Convert to fraction form
    5,718.12/8,570.12 = 3,375.75/x
  3. Step 3: Cross multiply
    5,718.12x = 8,570.12 × 3,375.75
  4. Step 4: Simplify right side
    5,718.12x = 28,930,565.71
  5. Step 5: Solve for x
    x = 28,930,565.71/5,718.12
  6. Step 6: Final answer
    x = 5,059.45

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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.