Home / 1,936.38-2,672.79-1,315.74

Finding the Fourth Proportional to 1,936.38, 2,672.79 and 1,315.74

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Solution

The fourth proportional to 1,936.38, 2,672.79 and 1,315.74 is: 1,816.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.38 : 2,672.79 = 1,315.74 : x
  2. Step 2: Convert to fraction form
    1,936.38/2,672.79 = 1,315.74/x
  3. Step 3: Cross multiply
    1,936.38x = 2,672.79 × 1,315.74
  4. Step 4: Simplify right side
    1,936.38x = 3,516,696.71
  5. Step 5: Solve for x
    x = 3,516,696.71/1,936.38
  6. Step 6: Final answer
    x = 1,816.12

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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.