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Finding the Fourth Proportional to 9,195, 12,689.10 and 5,003.28

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Solution

The fourth proportional to 9,195, 12,689.10 and 5,003.28 is: 6,904.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,195 : 12,689.10 = 5,003.28 : x
  2. Step 2: Convert to fraction form
    9,195/12,689.10 = 5,003.28/x
  3. Step 3: Cross multiply
    9,195x = 12,689.10 × 5,003.28
  4. Step 4: Simplify right side
    9,195x = 63,487,120.25
  5. Step 5: Solve for x
    x = 63,487,120.25/9,195
  6. Step 6: Final answer
    x = 6,904.53

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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.