Home / 1,657.20-2,286.45-1,028.22

Finding the Fourth Proportional to 1,657.20, 2,286.45 and 1,028.22

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Solution

The fourth proportional to 1,657.20, 2,286.45 and 1,028.22 is: 1,418.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.20 : 2,286.45 = 1,028.22 : x
  2. Step 2: Convert to fraction form
    1,657.20/2,286.45 = 1,028.22/x
  3. Step 3: Cross multiply
    1,657.20x = 2,286.45 × 1,028.22
  4. Step 4: Simplify right side
    1,657.20x = 2,350,973.62
  5. Step 5: Solve for x
    x = 2,350,973.62/1,657.20
  6. Step 6: Final answer
    x = 1,418.64

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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.