Home / 3,125.86-4,685.55-1,276.18

Finding the Fourth Proportional to 3,125.86, 4,685.55 and 1,276.18

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Solution

The fourth proportional to 3,125.86, 4,685.55 and 1,276.18 is: 1,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.86 : 4,685.55 = 1,276.18 : x
  2. Step 2: Convert to fraction form
    3,125.86/4,685.55 = 1,276.18/x
  3. Step 3: Cross multiply
    3,125.86x = 4,685.55 × 1,276.18
  4. Step 4: Simplify right side
    3,125.86x = 5,979,605.20
  5. Step 5: Solve for x
    x = 5,979,605.20/3,125.86
  6. Step 6: Final answer
    x = 1,912.95

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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.