Home / 2,798.24-3,861.68-1,603.42

Finding the Fourth Proportional to 2,798.24, 3,861.68 and 1,603.42

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Solution

The fourth proportional to 2,798.24, 3,861.68 and 1,603.42 is: 2,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.24 : 3,861.68 = 1,603.42 : x
  2. Step 2: Convert to fraction form
    2,798.24/3,861.68 = 1,603.42/x
  3. Step 3: Cross multiply
    2,798.24x = 3,861.68 × 1,603.42
  4. Step 4: Simplify right side
    2,798.24x = 6,191,877.27
  5. Step 5: Solve for x
    x = 6,191,877.27/2,798.24
  6. Step 6: Final answer
    x = 2,212.78

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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.