Home / 5,275.28-7,280.62-3,179

Finding the Fourth Proportional to 5,275.28, 7,280.62 and 3,179

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Solution

The fourth proportional to 5,275.28, 7,280.62 and 3,179 is: 4,387.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.28 : 7,280.62 = 3,179 : x
  2. Step 2: Convert to fraction form
    5,275.28/7,280.62 = 3,179/x
  3. Step 3: Cross multiply
    5,275.28x = 7,280.62 × 3,179
  4. Step 4: Simplify right side
    5,275.28x = 23,145,090.98
  5. Step 5: Solve for x
    x = 23,145,090.98/5,275.28
  6. Step 6: Final answer
    x = 4,387.46

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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.