Home / 2,611.65-3,921.75-2,480.13

Finding the Fourth Proportional to 2,611.65, 3,921.75 and 2,480.13

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Solution

The fourth proportional to 2,611.65, 3,921.75 and 2,480.13 is: 3,724.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.65 : 3,921.75 = 2,480.13 : x
  2. Step 2: Convert to fraction form
    2,611.65/3,921.75 = 2,480.13/x
  3. Step 3: Cross multiply
    2,611.65x = 3,921.75 × 2,480.13
  4. Step 4: Simplify right side
    2,611.65x = 9,726,449.83
  5. Step 5: Solve for x
    x = 9,726,449.83/2,611.65
  6. Step 6: Final answer
    x = 3,724.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.