Home / 6,789.11-9,365.63-4,131.90

Finding the Fourth Proportional to 6,789.11, 9,365.63 and 4,131.90

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Solution

The fourth proportional to 6,789.11, 9,365.63 and 4,131.90 is: 5,699.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,789.11 : 9,365.63 = 4,131.90 : x
  2. Step 2: Convert to fraction form
    6,789.11/9,365.63 = 4,131.90/x
  3. Step 3: Cross multiply
    6,789.11x = 9,365.63 × 4,131.90
  4. Step 4: Simplify right side
    6,789.11x = 38,697,825.94
  5. Step 5: Solve for x
    x = 38,697,825.94/6,789.11
  6. Step 6: Final answer
    x = 5,699.99

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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.