Home / 2,199.20-3,299.10-738.77

Finding the Fourth Proportional to 2,199.20, 3,299.10 and 738.77

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Solution

The fourth proportional to 2,199.20, 3,299.10 and 738.77 is: 1,108.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.20 : 3,299.10 = 738.77 : x
  2. Step 2: Convert to fraction form
    2,199.20/3,299.10 = 738.77/x
  3. Step 3: Cross multiply
    2,199.20x = 3,299.10 × 738.77
  4. Step 4: Simplify right side
    2,199.20x = 2,437,267.86
  5. Step 5: Solve for x
    x = 2,437,267.86/2,199.20
  6. Step 6: Final answer
    x = 1,108.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.