Home / 4,139.08-5,720.10-3,391.84

Finding the Fourth Proportional to 4,139.08, 5,720.10 and 3,391.84

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Solution

The fourth proportional to 4,139.08, 5,720.10 and 3,391.84 is: 4,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.08 : 5,720.10 = 3,391.84 : x
  2. Step 2: Convert to fraction form
    4,139.08/5,720.10 = 3,391.84/x
  3. Step 3: Cross multiply
    4,139.08x = 5,720.10 × 3,391.84
  4. Step 4: Simplify right side
    4,139.08x = 19,401,663.98
  5. Step 5: Solve for x
    x = 19,401,663.98/4,139.08
  6. Step 6: Final answer
    x = 4,687.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.