Home / 5,378.20-8,061.90-2,458.60

Finding the Fourth Proportional to 5,378.20, 8,061.90 and 2,458.60

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Solution

The fourth proportional to 5,378.20, 8,061.90 and 2,458.60 is: 3,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.20 : 8,061.90 = 2,458.60 : x
  2. Step 2: Convert to fraction form
    5,378.20/8,061.90 = 2,458.60/x
  3. Step 3: Cross multiply
    5,378.20x = 8,061.90 × 2,458.60
  4. Step 4: Simplify right side
    5,378.20x = 19,820,987.34
  5. Step 5: Solve for x
    x = 19,820,987.34/5,378.20
  6. Step 6: Final answer
    x = 3,685.43

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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.