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Finding the Fourth Proportional to 2,911.86, 4,019.52 and 1,793.22

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Solution

The fourth proportional to 2,911.86, 4,019.52 and 1,793.22 is: 2,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.86 : 4,019.52 = 1,793.22 : x
  2. Step 2: Convert to fraction form
    2,911.86/4,019.52 = 1,793.22/x
  3. Step 3: Cross multiply
    2,911.86x = 4,019.52 × 1,793.22
  4. Step 4: Simplify right side
    2,911.86x = 7,207,883.65
  5. Step 5: Solve for x
    x = 7,207,883.65/2,911.86
  6. Step 6: Final answer
    x = 2,475.35

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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.