Home / 3,113.91-4,659.19-1,938.41

Finding the Fourth Proportional to 3,113.91, 4,659.19 and 1,938.41

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Solution

The fourth proportional to 3,113.91, 4,659.19 and 1,938.41 is: 2,900.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.91 : 4,659.19 = 1,938.41 : x
  2. Step 2: Convert to fraction form
    3,113.91/4,659.19 = 1,938.41/x
  3. Step 3: Cross multiply
    3,113.91x = 4,659.19 × 1,938.41
  4. Step 4: Simplify right side
    3,113.91x = 9,031,423.76
  5. Step 5: Solve for x
    x = 9,031,423.76/3,113.91
  6. Step 6: Final answer
    x = 2,900.35

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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.