Home / 2,170.25-2,994.53-1,331.09

Finding the Fourth Proportional to 2,170.25, 2,994.53 and 1,331.09

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Solution

The fourth proportional to 2,170.25, 2,994.53 and 1,331.09 is: 1,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.25 : 2,994.53 = 1,331.09 : x
  2. Step 2: Convert to fraction form
    2,170.25/2,994.53 = 1,331.09/x
  3. Step 3: Cross multiply
    2,170.25x = 2,994.53 × 1,331.09
  4. Step 4: Simplify right side
    2,170.25x = 3,985,988.94
  5. Step 5: Solve for x
    x = 3,985,988.94/2,170.25
  6. Step 6: Final answer
    x = 1,836.65

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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.