Home / 2,331.90-3,480.78-2,137.14

Finding the Fourth Proportional to 2,331.90, 3,480.78 and 2,137.14

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Solution

The fourth proportional to 2,331.90, 3,480.78 and 2,137.14 is: 3,190.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.90 : 3,480.78 = 2,137.14 : x
  2. Step 2: Convert to fraction form
    2,331.90/3,480.78 = 2,137.14/x
  3. Step 3: Cross multiply
    2,331.90x = 3,480.78 × 2,137.14
  4. Step 4: Simplify right side
    2,331.90x = 7,438,914.17
  5. Step 5: Solve for x
    x = 7,438,914.17/2,331.90
  6. Step 6: Final answer
    x = 3,190.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.