Home / 5,691.40-8,520.90-4,384.60

Finding the Fourth Proportional to 5,691.40, 8,520.90 and 4,384.60

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Solution

The fourth proportional to 5,691.40, 8,520.90 and 4,384.60 is: 6,564.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,691.40 : 8,520.90 = 4,384.60 : x
  2. Step 2: Convert to fraction form
    5,691.40/8,520.90 = 4,384.60/x
  3. Step 3: Cross multiply
    5,691.40x = 8,520.90 × 4,384.60
  4. Step 4: Simplify right side
    5,691.40x = 37,360,738.14
  5. Step 5: Solve for x
    x = 37,360,738.14/5,691.40
  6. Step 6: Final answer
    x = 6,564.42

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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.