Home / 2,480.75-3,422.15-1,683.80

Finding the Fourth Proportional to 2,480.75, 3,422.15 and 1,683.80

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Solution

The fourth proportional to 2,480.75, 3,422.15 and 1,683.80 is: 2,322.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.75 : 3,422.15 = 1,683.80 : x
  2. Step 2: Convert to fraction form
    2,480.75/3,422.15 = 1,683.80/x
  3. Step 3: Cross multiply
    2,480.75x = 3,422.15 × 1,683.80
  4. Step 4: Simplify right side
    2,480.75x = 5,762,216.17
  5. Step 5: Solve for x
    x = 5,762,216.17/2,480.75
  6. Step 6: Final answer
    x = 2,322.77

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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.