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Finding the Fourth Proportional to 6,643, 9,167.34 and 4,129.84

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Solution

The fourth proportional to 6,643, 9,167.34 and 4,129.84 is: 5,699.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643 : 9,167.34 = 4,129.84 : x
  2. Step 2: Convert to fraction form
    6,643/9,167.34 = 4,129.84/x
  3. Step 3: Cross multiply
    6,643x = 9,167.34 × 4,129.84
  4. Step 4: Simplify right side
    6,643x = 37,859,647.43
  5. Step 5: Solve for x
    x = 37,859,647.43/6,643
  6. Step 6: Final answer
    x = 5,699.18

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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.