Home / 6,638.33-9,161.78-4,287.31

Finding the Fourth Proportional to 6,638.33, 9,161.78 and 4,287.31

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Solution

The fourth proportional to 6,638.33, 9,161.78 and 4,287.31 is: 5,917.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.33 : 9,161.78 = 4,287.31 : x
  2. Step 2: Convert to fraction form
    6,638.33/9,161.78 = 4,287.31/x
  3. Step 3: Cross multiply
    6,638.33x = 9,161.78 × 4,287.31
  4. Step 4: Simplify right side
    6,638.33x = 39,279,346.67
  5. Step 5: Solve for x
    x = 39,279,346.67/6,638.33
  6. Step 6: Final answer
    x = 5,917.05

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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.