Home / 3,943.40-5,915.82-1,347.08

Finding the Fourth Proportional to 3,943.40, 5,915.82 and 1,347.08

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Solution

The fourth proportional to 3,943.40, 5,915.82 and 1,347.08 is: 2,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.40 : 5,915.82 = 1,347.08 : x
  2. Step 2: Convert to fraction form
    3,943.40/5,915.82 = 1,347.08/x
  3. Step 3: Cross multiply
    3,943.40x = 5,915.82 × 1,347.08
  4. Step 4: Simplify right side
    3,943.40x = 7,969,082.81
  5. Step 5: Solve for x
    x = 7,969,082.81/3,943.40
  6. Step 6: Final answer
    x = 2,020.87

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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.