Home / 5,470.38-8,205.57-2,871.90

Finding the Fourth Proportional to 5,470.38, 8,205.57 and 2,871.90

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Solution

The fourth proportional to 5,470.38, 8,205.57 and 2,871.90 is: 4,307.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,470.38 : 8,205.57 = 2,871.90 : x
  2. Step 2: Convert to fraction form
    5,470.38/8,205.57 = 2,871.90/x
  3. Step 3: Cross multiply
    5,470.38x = 8,205.57 × 2,871.90
  4. Step 4: Simplify right side
    5,470.38x = 23,565,576.48
  5. Step 5: Solve for x
    x = 23,565,576.48/5,470.38
  6. Step 6: Final answer
    x = 4,307.85

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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.