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Finding the Fourth Proportional to 7,574.31, 11,363.79 and 3,879.16

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Solution

The fourth proportional to 7,574.31, 11,363.79 and 3,879.16 is: 5,819.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,574.31 : 11,363.79 = 3,879.16 : x
  2. Step 2: Convert to fraction form
    7,574.31/11,363.79 = 3,879.16/x
  3. Step 3: Cross multiply
    7,574.31x = 11,363.79 × 3,879.16
  4. Step 4: Simplify right side
    7,574.31x = 44,081,916.66
  5. Step 5: Solve for x
    x = 44,081,916.66/7,574.31
  6. Step 6: Final answer
    x = 5,819.92

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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.