Home / 7,188.40-9,919.87-4,044.57

Finding the Fourth Proportional to 7,188.40, 9,919.87 and 4,044.57

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Solution

The fourth proportional to 7,188.40, 9,919.87 and 4,044.57 is: 5,581.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.40 : 9,919.87 = 4,044.57 : x
  2. Step 2: Convert to fraction form
    7,188.40/9,919.87 = 4,044.57/x
  3. Step 3: Cross multiply
    7,188.40x = 9,919.87 × 4,044.57
  4. Step 4: Simplify right side
    7,188.40x = 40,121,608.61
  5. Step 5: Solve for x
    x = 40,121,608.61/7,188.40
  6. Step 6: Final answer
    x = 5,581.44

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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.