Home / 2,731.78-3,769.05-1,612.81

Finding the Fourth Proportional to 2,731.78, 3,769.05 and 1,612.81

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Solution

The fourth proportional to 2,731.78, 3,769.05 and 1,612.81 is: 2,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,731.78 : 3,769.05 = 1,612.81 : x
  2. Step 2: Convert to fraction form
    2,731.78/3,769.05 = 1,612.81/x
  3. Step 3: Cross multiply
    2,731.78x = 3,769.05 × 1,612.81
  4. Step 4: Simplify right side
    2,731.78x = 6,078,761.53
  5. Step 5: Solve for x
    x = 6,078,761.53/2,731.78
  6. Step 6: Final answer
    x = 2,225.20

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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.