Home / 3,144.60-4,339.74-1,818.60

Finding the Fourth Proportional to 3,144.60, 4,339.74 and 1,818.60

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Solution

The fourth proportional to 3,144.60, 4,339.74 and 1,818.60 is: 2,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.60 : 4,339.74 = 1,818.60 : x
  2. Step 2: Convert to fraction form
    3,144.60/4,339.74 = 1,818.60/x
  3. Step 3: Cross multiply
    3,144.60x = 4,339.74 × 1,818.60
  4. Step 4: Simplify right side
    3,144.60x = 7,892,251.16
  5. Step 5: Solve for x
    x = 7,892,251.16/3,144.60
  6. Step 6: Final answer
    x = 2,509.78

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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.