Home / 3,113.01-4,670.22-921.75

Finding the Fourth Proportional to 3,113.01, 4,670.22 and 921.75

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Solution

The fourth proportional to 3,113.01, 4,670.22 and 921.75 is: 1,382.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.01 : 4,670.22 = 921.75 : x
  2. Step 2: Convert to fraction form
    3,113.01/4,670.22 = 921.75/x
  3. Step 3: Cross multiply
    3,113.01x = 4,670.22 × 921.75
  4. Step 4: Simplify right side
    3,113.01x = 4,304,775.29
  5. Step 5: Solve for x
    x = 4,304,775.29/3,113.01
  6. Step 6: Final answer
    x = 1,382.83

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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.