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Finding the Fourth Proportional to 9,392.08, 12,960.86 and 5,143.04

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Solution

The fourth proportional to 9,392.08, 12,960.86 and 5,143.04 is: 7,097.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,392.08 : 12,960.86 = 5,143.04 : x
  2. Step 2: Convert to fraction form
    9,392.08/12,960.86 = 5,143.04/x
  3. Step 3: Cross multiply
    9,392.08x = 12,960.86 × 5,143.04
  4. Step 4: Simplify right side
    9,392.08x = 66,658,221.41
  5. Step 5: Solve for x
    x = 66,658,221.41/9,392.08
  6. Step 6: Final answer
    x = 7,097.28

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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.