Home / 3,720.74-5,134.38-2,127.56

Finding the Fourth Proportional to 3,720.74, 5,134.38 and 2,127.56

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Solution

The fourth proportional to 3,720.74, 5,134.38 and 2,127.56 is: 2,935.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.74 : 5,134.38 = 2,127.56 : x
  2. Step 2: Convert to fraction form
    3,720.74/5,134.38 = 2,127.56/x
  3. Step 3: Cross multiply
    3,720.74x = 5,134.38 × 2,127.56
  4. Step 4: Simplify right side
    3,720.74x = 10,923,701.51
  5. Step 5: Solve for x
    x = 10,923,701.51/3,720.74
  6. Step 6: Final answer
    x = 2,935.89

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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.