Home / 3,686.10-5,081.45-2,800.37

Finding the Fourth Proportional to 3,686.10, 5,081.45 and 2,800.37

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Solution

The fourth proportional to 3,686.10, 5,081.45 and 2,800.37 is: 3,860.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.10 : 5,081.45 = 2,800.37 : x
  2. Step 2: Convert to fraction form
    3,686.10/5,081.45 = 2,800.37/x
  3. Step 3: Cross multiply
    3,686.10x = 5,081.45 × 2,800.37
  4. Step 4: Simplify right side
    3,686.10x = 14,229,900.73
  5. Step 5: Solve for x
    x = 14,229,900.73/3,686.10
  6. Step 6: Final answer
    x = 3,860.42

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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.