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Finding the Fourth Proportional to 9,963.16, 13,749.16 and 5,486.87

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Solution

The fourth proportional to 9,963.16, 13,749.16 and 5,486.87 is: 7,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,963.16 : 13,749.16 = 5,486.87 : x
  2. Step 2: Convert to fraction form
    9,963.16/13,749.16 = 5,486.87/x
  3. Step 3: Cross multiply
    9,963.16x = 13,749.16 × 5,486.87
  4. Step 4: Simplify right side
    9,963.16x = 75,439,887.90
  5. Step 5: Solve for x
    x = 75,439,887.90/9,963.16
  6. Step 6: Final answer
    x = 7,571.88

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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.