Home / 3,144.78-4,340.19-1,818.48

Finding the Fourth Proportional to 3,144.78, 4,340.19 and 1,818.48

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Solution

The fourth proportional to 3,144.78, 4,340.19 and 1,818.48 is: 2,509.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.78 : 4,340.19 = 1,818.48 : x
  2. Step 2: Convert to fraction form
    3,144.78/4,340.19 = 1,818.48/x
  3. Step 3: Cross multiply
    3,144.78x = 4,340.19 × 1,818.48
  4. Step 4: Simplify right side
    3,144.78x = 7,892,526.24
  5. Step 5: Solve for x
    x = 7,892,526.24/3,144.78
  6. Step 6: Final answer
    x = 2,509.72

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Half scale
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Double scale
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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.