Home / 2,638.45-3,641.10-1,519.75

Finding the Fourth Proportional to 2,638.45, 3,641.10 and 1,519.75

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Solution

The fourth proportional to 2,638.45, 3,641.10 and 1,519.75 is: 2,097.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.45 : 3,641.10 = 1,519.75 : x
  2. Step 2: Convert to fraction form
    2,638.45/3,641.10 = 1,519.75/x
  3. Step 3: Cross multiply
    2,638.45x = 3,641.10 × 1,519.75
  4. Step 4: Simplify right side
    2,638.45x = 5,533,561.73
  5. Step 5: Solve for x
    x = 5,533,561.73/2,638.45
  6. Step 6: Final answer
    x = 2,097.28

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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.