Home / 7,801.11-11,705.61-3,418.59

Finding the Fourth Proportional to 7,801.11, 11,705.61 and 3,418.59

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Solution

The fourth proportional to 7,801.11, 11,705.61 and 3,418.59 is: 5,129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.11 : 11,705.61 = 3,418.59 : x
  2. Step 2: Convert to fraction form
    7,801.11/11,705.61 = 3,418.59/x
  3. Step 3: Cross multiply
    7,801.11x = 11,705.61 × 3,418.59
  4. Step 4: Simplify right side
    7,801.11x = 40,016,681.29
  5. Step 5: Solve for x
    x = 40,016,681.29/7,801.11
  6. Step 6: Final answer
    x = 5,129.61

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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.