Home / 3,937.93-5,428.89-2,816.91

Finding the Fourth Proportional to 3,937.93, 5,428.89 and 2,816.91

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Solution

The fourth proportional to 3,937.93, 5,428.89 and 2,816.91 is: 3,883.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.93 : 5,428.89 = 2,816.91 : x
  2. Step 2: Convert to fraction form
    3,937.93/5,428.89 = 2,816.91/x
  3. Step 3: Cross multiply
    3,937.93x = 5,428.89 × 2,816.91
  4. Step 4: Simplify right side
    3,937.93x = 15,292,694.53
  5. Step 5: Solve for x
    x = 15,292,694.53/3,937.93
  6. Step 6: Final answer
    x = 3,883.43

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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.