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Finding the Fourth Proportional to 7,188.39, 9,919.98 and 4,044.59

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Solution

The fourth proportional to 7,188.39, 9,919.98 and 4,044.59 is: 5,581.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.39 : 9,919.98 = 4,044.59 : x
  2. Step 2: Convert to fraction form
    7,188.39/9,919.98 = 4,044.59/x
  3. Step 3: Cross multiply
    7,188.39x = 9,919.98 × 4,044.59
  4. Step 4: Simplify right side
    7,188.39x = 40,122,202.31
  5. Step 5: Solve for x
    x = 40,122,202.31/7,188.39
  6. Step 6: Final answer
    x = 5,581.53

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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.