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Finding the Fourth Proportional to 6,486.48, 9,720.59 and 3,708.99

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Solution

The fourth proportional to 6,486.48, 9,720.59 and 3,708.99 is: 5,558.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486.48 : 9,720.59 = 3,708.99 : x
  2. Step 2: Convert to fraction form
    6,486.48/9,720.59 = 3,708.99/x
  3. Step 3: Cross multiply
    6,486.48x = 9,720.59 × 3,708.99
  4. Step 4: Simplify right side
    6,486.48x = 36,053,552.56
  5. Step 5: Solve for x
    x = 36,053,552.56/6,486.48
  6. Step 6: Final answer
    x = 5,558.26

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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.