Home / 5,149.32-7,105.80-2,911.07

Finding the Fourth Proportional to 5,149.32, 7,105.80 and 2,911.07

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Solution

The fourth proportional to 5,149.32, 7,105.80 and 2,911.07 is: 4,017.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.32 : 7,105.80 = 2,911.07 : x
  2. Step 2: Convert to fraction form
    5,149.32/7,105.80 = 2,911.07/x
  3. Step 3: Cross multiply
    5,149.32x = 7,105.80 × 2,911.07
  4. Step 4: Simplify right side
    5,149.32x = 20,685,445.68
  5. Step 5: Solve for x
    x = 20,685,445.68/5,149.32
  6. Step 6: Final answer
    x = 4,017.12

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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.