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Finding the Fourth Proportional to 6,720.88, 9,259.68 and 5,039.65

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Solution

The fourth proportional to 6,720.88, 9,259.68 and 5,039.65 is: 6,943.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.88 : 9,259.68 = 5,039.65 : x
  2. Step 2: Convert to fraction form
    6,720.88/9,259.68 = 5,039.65/x
  3. Step 3: Cross multiply
    6,720.88x = 9,259.68 × 5,039.65
  4. Step 4: Simplify right side
    6,720.88x = 46,665,546.31
  5. Step 5: Solve for x
    x = 46,665,546.31/6,720.88
  6. Step 6: Final answer
    x = 6,943.37

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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.