Home / 2,176.62-3,003.36-1,280.40

Finding the Fourth Proportional to 2,176.62, 3,003.36 and 1,280.40

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Solution

The fourth proportional to 2,176.62, 3,003.36 and 1,280.40 is: 1,766.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.62 : 3,003.36 = 1,280.40 : x
  2. Step 2: Convert to fraction form
    2,176.62/3,003.36 = 1,280.40/x
  3. Step 3: Cross multiply
    2,176.62x = 3,003.36 × 1,280.40
  4. Step 4: Simplify right side
    2,176.62x = 3,845,502.14
  5. Step 5: Solve for x
    x = 3,845,502.14/2,176.62
  6. Step 6: Final answer
    x = 1,766.73

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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.