Home / 1,382.38-2,076.81-1,275.46

Finding the Fourth Proportional to 1,382.38, 2,076.81 and 1,275.46

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Solution

The fourth proportional to 1,382.38, 2,076.81 and 1,275.46 is: 1,916.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.38 : 2,076.81 = 1,275.46 : x
  2. Step 2: Convert to fraction form
    1,382.38/2,076.81 = 1,275.46/x
  3. Step 3: Cross multiply
    1,382.38x = 2,076.81 × 1,275.46
  4. Step 4: Simplify right side
    1,382.38x = 2,648,888.08
  5. Step 5: Solve for x
    x = 2,648,888.08/1,382.38
  6. Step 6: Final answer
    x = 1,916.18

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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.