Home / 2,517.20-3,474.96-1,678.40

Finding the Fourth Proportional to 2,517.20, 3,474.96 and 1,678.40

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Solution

The fourth proportional to 2,517.20, 3,474.96 and 1,678.40 is: 2,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.20 : 3,474.96 = 1,678.40 : x
  2. Step 2: Convert to fraction form
    2,517.20/3,474.96 = 1,678.40/x
  3. Step 3: Cross multiply
    2,517.20x = 3,474.96 × 1,678.40
  4. Step 4: Simplify right side
    2,517.20x = 5,832,372.86
  5. Step 5: Solve for x
    x = 5,832,372.86/2,517.20
  6. Step 6: Final answer
    x = 2,317.01

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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.