Home / 5,275.47-7,912.05-2,154.66

Finding the Fourth Proportional to 5,275.47, 7,912.05 and 2,154.66

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Solution

The fourth proportional to 5,275.47, 7,912.05 and 2,154.66 is: 3,231.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.47 : 7,912.05 = 2,154.66 : x
  2. Step 2: Convert to fraction form
    5,275.47/7,912.05 = 2,154.66/x
  3. Step 3: Cross multiply
    5,275.47x = 7,912.05 × 2,154.66
  4. Step 4: Simplify right side
    5,275.47x = 17,047,777.65
  5. Step 5: Solve for x
    x = 17,047,777.65/5,275.47
  6. Step 6: Final answer
    x = 3,231.52

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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.