Home / 3,102.10-4,279.77-2,040.45

Finding the Fourth Proportional to 3,102.10, 4,279.77 and 2,040.45

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Solution

The fourth proportional to 3,102.10, 4,279.77 and 2,040.45 is: 2,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.10 : 4,279.77 = 2,040.45 : x
  2. Step 2: Convert to fraction form
    3,102.10/4,279.77 = 2,040.45/x
  3. Step 3: Cross multiply
    3,102.10x = 4,279.77 × 2,040.45
  4. Step 4: Simplify right side
    3,102.10x = 8,732,635.30
  5. Step 5: Solve for x
    x = 8,732,635.30/3,102.10
  6. Step 6: Final answer
    x = 2,815.07

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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.