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Finding the Fourth Proportional to 9,195.70, 12,689.70 and 5,003.95

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Solution

The fourth proportional to 9,195.70, 12,689.70 and 5,003.95 is: 6,905.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,195.70 : 12,689.70 = 5,003.95 : x
  2. Step 2: Convert to fraction form
    9,195.70/12,689.70 = 5,003.95/x
  3. Step 3: Cross multiply
    9,195.70x = 12,689.70 × 5,003.95
  4. Step 4: Simplify right side
    9,195.70x = 63,498,624.32
  5. Step 5: Solve for x
    x = 63,498,624.32/9,195.70
  6. Step 6: Final answer
    x = 6,905.25

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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.