Home / 1,660.20-2,290.58-1,031.22

Finding the Fourth Proportional to 1,660.20, 2,290.58 and 1,031.22

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Solution

The fourth proportional to 1,660.20, 2,290.58 and 1,031.22 is: 1,422.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.20 : 2,290.58 = 1,031.22 : x
  2. Step 2: Convert to fraction form
    1,660.20/2,290.58 = 1,031.22/x
  3. Step 3: Cross multiply
    1,660.20x = 2,290.58 × 1,031.22
  4. Step 4: Simplify right side
    1,660.20x = 2,362,091.91
  5. Step 5: Solve for x
    x = 2,362,091.91/1,660.20
  6. Step 6: Final answer
    x = 1,422.78

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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.