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Finding the Fourth Proportional to 6,720.44, 9,259.08 and 5,039.21

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Solution

The fourth proportional to 6,720.44, 9,259.08 and 5,039.21 is: 6,942.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.44 : 9,259.08 = 5,039.21 : x
  2. Step 2: Convert to fraction form
    6,720.44/9,259.08 = 5,039.21/x
  3. Step 3: Cross multiply
    6,720.44x = 9,259.08 × 5,039.21
  4. Step 4: Simplify right side
    6,720.44x = 46,658,452.78
  5. Step 5: Solve for x
    x = 46,658,452.78/6,720.44
  6. Step 6: Final answer
    x = 6,942.77

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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.