Home / 5,724.90-7,899.98-3,172.50

Finding the Fourth Proportional to 5,724.90, 7,899.98 and 3,172.50

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Solution

The fourth proportional to 5,724.90, 7,899.98 and 3,172.50 is: 4,377.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,724.90 : 7,899.98 = 3,172.50 : x
  2. Step 2: Convert to fraction form
    5,724.90/7,899.98 = 3,172.50/x
  3. Step 3: Cross multiply
    5,724.90x = 7,899.98 × 3,172.50
  4. Step 4: Simplify right side
    5,724.90x = 25,062,670.69
  5. Step 5: Solve for x
    x = 25,062,670.69/5,724.90
  6. Step 6: Final answer
    x = 4,377.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.