Home / 5,079-7,618.46-1,381.22

Finding the Fourth Proportional to 5,079, 7,618.46 and 1,381.22

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Solution

The fourth proportional to 5,079, 7,618.46 and 1,381.22 is: 2,071.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079 : 7,618.46 = 1,381.22 : x
  2. Step 2: Convert to fraction form
    5,079/7,618.46 = 1,381.22/x
  3. Step 3: Cross multiply
    5,079x = 7,618.46 × 1,381.22
  4. Step 4: Simplify right side
    5,079x = 10,522,724.32
  5. Step 5: Solve for x
    x = 10,522,724.32/5,079
  6. Step 6: Final answer
    x = 2,071.81

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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.