Home / 5,275.53-7,912.89-1,812.78

Finding the Fourth Proportional to 5,275.53, 7,912.89 and 1,812.78

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Solution

The fourth proportional to 5,275.53, 7,912.89 and 1,812.78 is: 2,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.53 : 7,912.89 = 1,812.78 : x
  2. Step 2: Convert to fraction form
    5,275.53/7,912.89 = 1,812.78/x
  3. Step 3: Cross multiply
    5,275.53x = 7,912.89 × 1,812.78
  4. Step 4: Simplify right side
    5,275.53x = 14,344,328.73
  5. Step 5: Solve for x
    x = 14,344,328.73/5,275.53
  6. Step 6: Final answer
    x = 2,719.03

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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.