Home / 2,740.04-4,091.42-2,178.40

Finding the Fourth Proportional to 2,740.04, 4,091.42 and 2,178.40

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Solution

The fourth proportional to 2,740.04, 4,091.42 and 2,178.40 is: 3,252.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.04 : 4,091.42 = 2,178.40 : x
  2. Step 2: Convert to fraction form
    2,740.04/4,091.42 = 2,178.40/x
  3. Step 3: Cross multiply
    2,740.04x = 4,091.42 × 2,178.40
  4. Step 4: Simplify right side
    2,740.04x = 8,912,749.33
  5. Step 5: Solve for x
    x = 8,912,749.33/2,740.04
  6. Step 6: Final answer
    x = 3,252.78

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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.