Home / 2,455.56-3,388.68-1,572.30

Finding the Fourth Proportional to 2,455.56, 3,388.68 and 1,572.30

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Solution

The fourth proportional to 2,455.56, 3,388.68 and 1,572.30 is: 2,169.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.56 : 3,388.68 = 1,572.30 : x
  2. Step 2: Convert to fraction form
    2,455.56/3,388.68 = 1,572.30/x
  3. Step 3: Cross multiply
    2,455.56x = 3,388.68 × 1,572.30
  4. Step 4: Simplify right side
    2,455.56x = 5,328,021.56
  5. Step 5: Solve for x
    x = 5,328,021.56/2,455.56
  6. Step 6: Final answer
    x = 2,169.78

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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.