Home / 2,079.40-3,119.10-1,957.90

Finding the Fourth Proportional to 2,079.40, 3,119.10 and 1,957.90

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Solution

The fourth proportional to 2,079.40, 3,119.10 and 1,957.90 is: 2,936.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.40 : 3,119.10 = 1,957.90 : x
  2. Step 2: Convert to fraction form
    2,079.40/3,119.10 = 1,957.90/x
  3. Step 3: Cross multiply
    2,079.40x = 3,119.10 × 1,957.90
  4. Step 4: Simplify right side
    2,079.40x = 6,106,885.89
  5. Step 5: Solve for x
    x = 6,106,885.89/2,079.40
  6. Step 6: Final answer
    x = 2,936.85

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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.