Home / 3,720.58-5,132.90-2,126.97

Finding the Fourth Proportional to 3,720.58, 5,132.90 and 2,126.97

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Solution

The fourth proportional to 3,720.58, 5,132.90 and 2,126.97 is: 2,934.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.58 : 5,132.90 = 2,126.97 : x
  2. Step 2: Convert to fraction form
    3,720.58/5,132.90 = 2,126.97/x
  3. Step 3: Cross multiply
    3,720.58x = 5,132.90 × 2,126.97
  4. Step 4: Simplify right side
    3,720.58x = 10,917,529.63
  5. Step 5: Solve for x
    x = 10,917,529.63/3,720.58
  6. Step 6: Final answer
    x = 2,934.36

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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.