Home / 2,225.46-3,072.42-1,979.40

Finding the Fourth Proportional to 2,225.46, 3,072.42 and 1,979.40

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Solution

The fourth proportional to 2,225.46, 3,072.42 and 1,979.40 is: 2,732.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.46 : 3,072.42 = 1,979.40 : x
  2. Step 2: Convert to fraction form
    2,225.46/3,072.42 = 1,979.40/x
  3. Step 3: Cross multiply
    2,225.46x = 3,072.42 × 1,979.40
  4. Step 4: Simplify right side
    2,225.46x = 6,081,548.15
  5. Step 5: Solve for x
    x = 6,081,548.15/2,225.46
  6. Step 6: Final answer
    x = 2,732.72

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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.