Home / 2,987.29-4,122.41-1,660.83

Finding the Fourth Proportional to 2,987.29, 4,122.41 and 1,660.83

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Solution

The fourth proportional to 2,987.29, 4,122.41 and 1,660.83 is: 2,291.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.29 : 4,122.41 = 1,660.83 : x
  2. Step 2: Convert to fraction form
    2,987.29/4,122.41 = 1,660.83/x
  3. Step 3: Cross multiply
    2,987.29x = 4,122.41 × 1,660.83
  4. Step 4: Simplify right side
    2,987.29x = 6,846,622.20
  5. Step 5: Solve for x
    x = 6,846,622.20/2,987.29
  6. Step 6: Final answer
    x = 2,291.92

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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.