Home / 3,845.36-5,306.90-2,166.65

Finding the Fourth Proportional to 3,845.36, 5,306.90 and 2,166.65

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Solution

The fourth proportional to 3,845.36, 5,306.90 and 2,166.65 is: 2,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.36 : 5,306.90 = 2,166.65 : x
  2. Step 2: Convert to fraction form
    3,845.36/5,306.90 = 2,166.65/x
  3. Step 3: Cross multiply
    3,845.36x = 5,306.90 × 2,166.65
  4. Step 4: Simplify right side
    3,845.36x = 11,498,197.32
  5. Step 5: Solve for x
    x = 11,498,197.32/3,845.36
  6. Step 6: Final answer
    x = 2,990.15

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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.