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Finding the Fourth Proportional to 9,324.36, 12,868.86 and 5,345.88

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Solution

The fourth proportional to 9,324.36, 12,868.86 and 5,345.88 is: 7,378.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,324.36 : 12,868.86 = 5,345.88 : x
  2. Step 2: Convert to fraction form
    9,324.36/12,868.86 = 5,345.88/x
  3. Step 3: Cross multiply
    9,324.36x = 12,868.86 × 5,345.88
  4. Step 4: Simplify right side
    9,324.36x = 68,795,381.30
  5. Step 5: Solve for x
    x = 68,795,381.30/9,324.36
  6. Step 6: Final answer
    x = 7,378.03

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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.