Home / 2,375.81-3,278.70-1,328.07

Finding the Fourth Proportional to 2,375.81, 3,278.70 and 1,328.07

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Solution

The fourth proportional to 2,375.81, 3,278.70 and 1,328.07 is: 1,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,375.81 : 3,278.70 = 1,328.07 : x
  2. Step 2: Convert to fraction form
    2,375.81/3,278.70 = 1,328.07/x
  3. Step 3: Cross multiply
    2,375.81x = 3,278.70 × 1,328.07
  4. Step 4: Simplify right side
    2,375.81x = 4,354,343.11
  5. Step 5: Solve for x
    x = 4,354,343.11/2,375.81
  6. Step 6: Final answer
    x = 1,832.78

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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.