Home / 3,890.10-5,811.08-3,499.48

Finding the Fourth Proportional to 3,890.10, 5,811.08 and 3,499.48

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Solution

The fourth proportional to 3,890.10, 5,811.08 and 3,499.48 is: 5,227.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.10 : 5,811.08 = 3,499.48 : x
  2. Step 2: Convert to fraction form
    3,890.10/5,811.08 = 3,499.48/x
  3. Step 3: Cross multiply
    3,890.10x = 5,811.08 × 3,499.48
  4. Step 4: Simplify right side
    3,890.10x = 20,335,758.24
  5. Step 5: Solve for x
    x = 20,335,758.24/3,890.10
  6. Step 6: Final answer
    x = 5,227.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.