Home / 2,177.15-3,003.35-1,280.25

Finding the Fourth Proportional to 2,177.15, 3,003.35 and 1,280.25

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Solution

The fourth proportional to 2,177.15, 3,003.35 and 1,280.25 is: 1,766.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.15 : 3,003.35 = 1,280.25 : x
  2. Step 2: Convert to fraction form
    2,177.15/3,003.35 = 1,280.25/x
  3. Step 3: Cross multiply
    2,177.15x = 3,003.35 × 1,280.25
  4. Step 4: Simplify right side
    2,177.15x = 3,845,032.44
  5. Step 5: Solve for x
    x = 3,845,032.44/2,177.15
  6. Step 6: Final answer
    x = 1,766.09

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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.