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Finding the Fourth Proportional to 9,791.19, 13,515.26 and 5,815.71

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Solution

The fourth proportional to 9,791.19, 13,515.26 and 5,815.71 is: 8,027.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,791.19 : 13,515.26 = 5,815.71 : x
  2. Step 2: Convert to fraction form
    9,791.19/13,515.26 = 5,815.71/x
  3. Step 3: Cross multiply
    9,791.19x = 13,515.26 × 5,815.71
  4. Step 4: Simplify right side
    9,791.19x = 78,600,803.66
  5. Step 5: Solve for x
    x = 78,600,803.66/9,791.19
  6. Step 6: Final answer
    x = 8,027.71

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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.