Home / 5,160.47-7,121.46-3,171.02

Finding the Fourth Proportional to 5,160.47, 7,121.46 and 3,171.02

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Solution

The fourth proportional to 5,160.47, 7,121.46 and 3,171.02 is: 4,376.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.47 : 7,121.46 = 3,171.02 : x
  2. Step 2: Convert to fraction form
    5,160.47/7,121.46 = 3,171.02/x
  3. Step 3: Cross multiply
    5,160.47x = 7,121.46 × 3,171.02
  4. Step 4: Simplify right side
    5,160.47x = 22,582,292.09
  5. Step 5: Solve for x
    x = 22,582,292.09/5,160.47
  6. Step 6: Final answer
    x = 4,376.01

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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.