Home / 2,170.59-2,995.55-1,286.20

Finding the Fourth Proportional to 2,170.59, 2,995.55 and 1,286.20

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Solution

The fourth proportional to 2,170.59, 2,995.55 and 1,286.20 is: 1,775.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.59 : 2,995.55 = 1,286.20 : x
  2. Step 2: Convert to fraction form
    2,170.59/2,995.55 = 1,286.20/x
  3. Step 3: Cross multiply
    2,170.59x = 2,995.55 × 1,286.20
  4. Step 4: Simplify right side
    2,170.59x = 3,852,876.41
  5. Step 5: Solve for x
    x = 3,852,876.41/2,170.59
  6. Step 6: Final answer
    x = 1,775.04

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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.