Home / 3,118.16-4,301.52-2,040.80

Finding the Fourth Proportional to 3,118.16, 4,301.52 and 2,040.80

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Solution

The fourth proportional to 3,118.16, 4,301.52 and 2,040.80 is: 2,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.16 : 4,301.52 = 2,040.80 : x
  2. Step 2: Convert to fraction form
    3,118.16/4,301.52 = 2,040.80/x
  3. Step 3: Cross multiply
    3,118.16x = 4,301.52 × 2,040.80
  4. Step 4: Simplify right side
    3,118.16x = 8,778,542.02
  5. Step 5: Solve for x
    x = 8,778,542.02/3,118.16
  6. Step 6: Final answer
    x = 2,815.30

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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.