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Finding the Fourth Proportional to 2,740.78, 4,107.48 and 2,281.48

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Solution

The fourth proportional to 2,740.78, 4,107.48 and 2,281.48 is: 3,419.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.78 : 4,107.48 = 2,281.48 : x
  2. Step 2: Convert to fraction form
    2,740.78/4,107.48 = 2,281.48/x
  3. Step 3: Cross multiply
    2,740.78x = 4,107.48 × 2,281.48
  4. Step 4: Simplify right side
    2,740.78x = 9,371,133.47
  5. Step 5: Solve for x
    x = 9,371,133.47/2,740.78
  6. Step 6: Final answer
    x = 3,419.15

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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.