Home / 6,638.90-9,168.80-4,126.97

Finding the Fourth Proportional to 6,638.90, 9,168.80 and 4,126.97

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Solution

The fourth proportional to 6,638.90, 9,168.80 and 4,126.97 is: 5,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.90 : 9,168.80 = 4,126.97 : x
  2. Step 2: Convert to fraction form
    6,638.90/9,168.80 = 4,126.97/x
  3. Step 3: Cross multiply
    6,638.90x = 9,168.80 × 4,126.97
  4. Step 4: Simplify right side
    6,638.90x = 37,839,296.06
  5. Step 5: Solve for x
    x = 37,839,296.06/6,638.90
  6. Step 6: Final answer
    x = 5,699.64

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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.