Home / 2,089.11-3,119.74-1,967.61

Finding the Fourth Proportional to 2,089.11, 3,119.74 and 1,967.61

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Solution

The fourth proportional to 2,089.11, 3,119.74 and 1,967.61 is: 2,938.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.11 : 3,119.74 = 1,967.61 : x
  2. Step 2: Convert to fraction form
    2,089.11/3,119.74 = 1,967.61/x
  3. Step 3: Cross multiply
    2,089.11x = 3,119.74 × 1,967.61
  4. Step 4: Simplify right side
    2,089.11x = 6,138,431.62
  5. Step 5: Solve for x
    x = 6,138,431.62/2,089.11
  6. Step 6: Final answer
    x = 2,938.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.