Home / 3,720.88-5,135.29-2,148.97

Finding the Fourth Proportional to 3,720.88, 5,135.29 and 2,148.97

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Solution

The fourth proportional to 3,720.88, 5,135.29 and 2,148.97 is: 2,965.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.88 : 5,135.29 = 2,148.97 : x
  2. Step 2: Convert to fraction form
    3,720.88/5,135.29 = 2,148.97/x
  3. Step 3: Cross multiply
    3,720.88x = 5,135.29 × 2,148.97
  4. Step 4: Simplify right side
    3,720.88x = 11,035,586.99
  5. Step 5: Solve for x
    x = 11,035,586.99/3,720.88
  6. Step 6: Final answer
    x = 2,965.86

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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.