Home / 3,839.80-5,298.51-2,160.94

Finding the Fourth Proportional to 3,839.80, 5,298.51 and 2,160.94

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Solution

The fourth proportional to 3,839.80, 5,298.51 and 2,160.94 is: 2,981.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.80 : 5,298.51 = 2,160.94 : x
  2. Step 2: Convert to fraction form
    3,839.80/5,298.51 = 2,160.94/x
  3. Step 3: Cross multiply
    3,839.80x = 5,298.51 × 2,160.94
  4. Step 4: Simplify right side
    3,839.80x = 11,449,762.20
  5. Step 5: Solve for x
    x = 11,449,762.20/3,839.80
  6. Step 6: Final answer
    x = 2,981.86

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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.