Home / 2,572.40-3,855.44-1,109.92

Finding the Fourth Proportional to 2,572.40, 3,855.44 and 1,109.92

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Solution

The fourth proportional to 2,572.40, 3,855.44 and 1,109.92 is: 1,663.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.40 : 3,855.44 = 1,109.92 : x
  2. Step 2: Convert to fraction form
    2,572.40/3,855.44 = 1,109.92/x
  3. Step 3: Cross multiply
    2,572.40x = 3,855.44 × 1,109.92
  4. Step 4: Simplify right side
    2,572.40x = 4,279,229.96
  5. Step 5: Solve for x
    x = 4,279,229.96/2,572.40
  6. Step 6: Final answer
    x = 1,663.52

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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.