Home / 3,326.80-4,989.09-1,105.12

Finding the Fourth Proportional to 3,326.80, 4,989.09 and 1,105.12

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Solution

The fourth proportional to 3,326.80, 4,989.09 and 1,105.12 is: 1,657.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.80 : 4,989.09 = 1,105.12 : x
  2. Step 2: Convert to fraction form
    3,326.80/4,989.09 = 1,105.12/x
  3. Step 3: Cross multiply
    3,326.80x = 4,989.09 × 1,105.12
  4. Step 4: Simplify right side
    3,326.80x = 5,513,543.14
  5. Step 5: Solve for x
    x = 5,513,543.14/3,326.80
  6. Step 6: Final answer
    x = 1,657.31

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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.