Home / 2,638.80-3,641.62-1,519.65

Finding the Fourth Proportional to 2,638.80, 3,641.62 and 1,519.65

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Solution

The fourth proportional to 2,638.80, 3,641.62 and 1,519.65 is: 2,097.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.80 : 3,641.62 = 1,519.65 : x
  2. Step 2: Convert to fraction form
    2,638.80/3,641.62 = 1,519.65/x
  3. Step 3: Cross multiply
    2,638.80x = 3,641.62 × 1,519.65
  4. Step 4: Simplify right side
    2,638.80x = 5,533,987.83
  5. Step 5: Solve for x
    x = 5,533,987.83/2,638.80
  6. Step 6: Final answer
    x = 2,097.16

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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.