Home / 2,799.38-3,863.72-1,621.10

Finding the Fourth Proportional to 2,799.38, 3,863.72 and 1,621.10

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Solution

The fourth proportional to 2,799.38, 3,863.72 and 1,621.10 is: 2,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.38 : 3,863.72 = 1,621.10 : x
  2. Step 2: Convert to fraction form
    2,799.38/3,863.72 = 1,621.10/x
  3. Step 3: Cross multiply
    2,799.38x = 3,863.72 × 1,621.10
  4. Step 4: Simplify right side
    2,799.38x = 6,263,476.49
  5. Step 5: Solve for x
    x = 6,263,476.49/2,799.38
  6. Step 6: Final answer
    x = 2,237.45

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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.