Home / 5,149.12-7,721.94-1,685.56

Finding the Fourth Proportional to 5,149.12, 7,721.94 and 1,685.56

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Solution

The fourth proportional to 5,149.12, 7,721.94 and 1,685.56 is: 2,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.12 : 7,721.94 = 1,685.56 : x
  2. Step 2: Convert to fraction form
    5,149.12/7,721.94 = 1,685.56/x
  3. Step 3: Cross multiply
    5,149.12x = 7,721.94 × 1,685.56
  4. Step 4: Simplify right side
    5,149.12x = 13,015,793.19
  5. Step 5: Solve for x
    x = 13,015,793.19/5,149.12
  6. Step 6: Final answer
    x = 2,527.77

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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.