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Finding the Fourth Proportional to 2,572.78, 3,550.23 and 1,974.19

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Solution

The fourth proportional to 2,572.78, 3,550.23 and 1,974.19 is: 2,724.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.78 : 3,550.23 = 1,974.19 : x
  2. Step 2: Convert to fraction form
    2,572.78/3,550.23 = 1,974.19/x
  3. Step 3: Cross multiply
    2,572.78x = 3,550.23 × 1,974.19
  4. Step 4: Simplify right side
    2,572.78x = 7,008,828.56
  5. Step 5: Solve for x
    x = 7,008,828.56/2,572.78
  6. Step 6: Final answer
    x = 2,724.22

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Double scale
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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.