Home / 2,002.78-2,765.44-1,331.22

Finding the Fourth Proportional to 2,002.78, 2,765.44 and 1,331.22

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Solution

The fourth proportional to 2,002.78, 2,765.44 and 1,331.22 is: 1,838.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,002.78 : 2,765.44 = 1,331.22 : x
  2. Step 2: Convert to fraction form
    2,002.78/2,765.44 = 1,331.22/x
  3. Step 3: Cross multiply
    2,002.78x = 2,765.44 × 1,331.22
  4. Step 4: Simplify right side
    2,002.78x = 3,681,409.04
  5. Step 5: Solve for x
    x = 3,681,409.04/2,002.78
  6. Step 6: Final answer
    x = 1,838.15

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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.