Home / 3,915.27-5,871.33-1,415.79

Finding the Fourth Proportional to 3,915.27, 5,871.33 and 1,415.79

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Solution

The fourth proportional to 3,915.27, 5,871.33 and 1,415.79 is: 2,123.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.27 : 5,871.33 = 1,415.79 : x
  2. Step 2: Convert to fraction form
    3,915.27/5,871.33 = 1,415.79/x
  3. Step 3: Cross multiply
    3,915.27x = 5,871.33 × 1,415.79
  4. Step 4: Simplify right side
    3,915.27x = 8,312,570.30
  5. Step 5: Solve for x
    x = 8,312,570.30/3,915.27
  6. Step 6: Final answer
    x = 2,123.12

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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.