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Finding the Fourth Proportional to 6,835.59, 9,404.91 and 6,642

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Solution

The fourth proportional to 6,835.59, 9,404.91 and 6,642 is: 9,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,835.59 : 9,404.91 = 6,642 : x
  2. Step 2: Convert to fraction form
    6,835.59/9,404.91 = 6,642/x
  3. Step 3: Cross multiply
    6,835.59x = 9,404.91 × 6,642
  4. Step 4: Simplify right side
    6,835.59x = 62,467,412.22
  5. Step 5: Solve for x
    x = 62,467,412.22/6,835.59
  6. Step 6: Final answer
    x = 9,138.55

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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.