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Finding the Fourth Proportional to 9,133.20, 13,699.80 and 2,207.70

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Solution

The fourth proportional to 9,133.20, 13,699.80 and 2,207.70 is: 3,311.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,133.20 : 13,699.80 = 2,207.70 : x
  2. Step 2: Convert to fraction form
    9,133.20/13,699.80 = 2,207.70/x
  3. Step 3: Cross multiply
    9,133.20x = 13,699.80 × 2,207.70
  4. Step 4: Simplify right side
    9,133.20x = 30,245,048.46
  5. Step 5: Solve for x
    x = 30,245,048.46/9,133.20
  6. Step 6: Final answer
    x = 3,311.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.