Home / 2,382.74-3,288.19-1,388.70

Finding the Fourth Proportional to 2,382.74, 3,288.19 and 1,388.70

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Solution

The fourth proportional to 2,382.74, 3,288.19 and 1,388.70 is: 1,916.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.74 : 3,288.19 = 1,388.70 : x
  2. Step 2: Convert to fraction form
    2,382.74/3,288.19 = 1,388.70/x
  3. Step 3: Cross multiply
    2,382.74x = 3,288.19 × 1,388.70
  4. Step 4: Simplify right side
    2,382.74x = 4,566,286.07
  5. Step 5: Solve for x
    x = 4,566,286.07/2,382.74
  6. Step 6: Final answer
    x = 1,916.41

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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.