Home / 2,028.72-2,799.60-1,331.36

Finding the Fourth Proportional to 2,028.72, 2,799.60 and 1,331.36

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Solution

The fourth proportional to 2,028.72, 2,799.60 and 1,331.36 is: 1,837.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.72 : 2,799.60 = 1,331.36 : x
  2. Step 2: Convert to fraction form
    2,028.72/2,799.60 = 1,331.36/x
  3. Step 3: Cross multiply
    2,028.72x = 2,799.60 × 1,331.36
  4. Step 4: Simplify right side
    2,028.72x = 3,727,275.46
  5. Step 5: Solve for x
    x = 3,727,275.46/2,028.72
  6. Step 6: Final answer
    x = 1,837.25

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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.