Home / 2,987.10-4,122.18-1,660.83

Finding the Fourth Proportional to 2,987.10, 4,122.18 and 1,660.83

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Solution

The fourth proportional to 2,987.10, 4,122.18 and 1,660.83 is: 2,291.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.10 : 4,122.18 = 1,660.83 : x
  2. Step 2: Convert to fraction form
    2,987.10/4,122.18 = 1,660.83/x
  3. Step 3: Cross multiply
    2,987.10x = 4,122.18 × 1,660.83
  4. Step 4: Simplify right side
    2,987.10x = 6,846,240.21
  5. Step 5: Solve for x
    x = 6,846,240.21/2,987.10
  6. Step 6: Final answer
    x = 2,291.94

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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.