Home / 3,869.30-5,339.99-2,190.98

Finding the Fourth Proportional to 3,869.30, 5,339.99 and 2,190.98

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Solution

The fourth proportional to 3,869.30, 5,339.99 and 2,190.98 is: 3,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.30 : 5,339.99 = 2,190.98 : x
  2. Step 2: Convert to fraction form
    3,869.30/5,339.99 = 2,190.98/x
  3. Step 3: Cross multiply
    3,869.30x = 5,339.99 × 2,190.98
  4. Step 4: Simplify right side
    3,869.30x = 11,699,830.12
  5. Step 5: Solve for x
    x = 11,699,830.12/3,869.30
  6. Step 6: Final answer
    x = 3,023.76

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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.