Home / 7,104.30-9,805.16-4,121.07

Finding the Fourth Proportional to 7,104.30, 9,805.16 and 4,121.07

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Solution

The fourth proportional to 7,104.30, 9,805.16 and 4,121.07 is: 5,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,104.30 : 9,805.16 = 4,121.07 : x
  2. Step 2: Convert to fraction form
    7,104.30/9,805.16 = 4,121.07/x
  3. Step 3: Cross multiply
    7,104.30x = 9,805.16 × 4,121.07
  4. Step 4: Simplify right side
    7,104.30x = 40,407,730.12
  5. Step 5: Solve for x
    x = 40,407,730.12/7,104.30
  6. Step 6: Final answer
    x = 5,687.78

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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.