Home / 5,167.40-7,751.64-2,978.60

Finding the Fourth Proportional to 5,167.40, 7,751.64 and 2,978.60

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Solution

The fourth proportional to 5,167.40, 7,751.64 and 2,978.60 is: 4,468.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.40 : 7,751.64 = 2,978.60 : x
  2. Step 2: Convert to fraction form
    5,167.40/7,751.64 = 2,978.60/x
  3. Step 3: Cross multiply
    5,167.40x = 7,751.64 × 2,978.60
  4. Step 4: Simplify right side
    5,167.40x = 23,089,034.90
  5. Step 5: Solve for x
    x = 23,089,034.90/5,167.40
  6. Step 6: Final answer
    x = 4,468.21

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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.