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Finding the Fourth Proportional to 9,867.56, 13,617.48 and 5,391.26

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Solution

The fourth proportional to 9,867.56, 13,617.48 and 5,391.26 is: 7,440.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.56 : 13,617.48 = 5,391.26 : x
  2. Step 2: Convert to fraction form
    9,867.56/13,617.48 = 5,391.26/x
  3. Step 3: Cross multiply
    9,867.56x = 13,617.48 × 5,391.26
  4. Step 4: Simplify right side
    9,867.56x = 73,415,375.22
  5. Step 5: Solve for x
    x = 73,415,375.22/9,867.56
  6. Step 6: Final answer
    x = 7,440.07

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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.