Home / 2,089.15-3,134.12-839.84

Finding the Fourth Proportional to 2,089.15, 3,134.12 and 839.84

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Solution

The fourth proportional to 2,089.15, 3,134.12 and 839.84 is: 1,259.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.15 : 3,134.12 = 839.84 : x
  2. Step 2: Convert to fraction form
    2,089.15/3,134.12 = 839.84/x
  3. Step 3: Cross multiply
    2,089.15x = 3,134.12 × 839.84
  4. Step 4: Simplify right side
    2,089.15x = 2,632,149.41
  5. Step 5: Solve for x
    x = 2,632,149.41/2,089.15
  6. Step 6: Final answer
    x = 1,259.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.