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Finding the Fourth Proportional to 7,486.13, 11,229.14 and 1,939.46

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Solution

The fourth proportional to 7,486.13, 11,229.14 and 1,939.46 is: 2,909.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.13 : 11,229.14 = 1,939.46 : x
  2. Step 2: Convert to fraction form
    7,486.13/11,229.14 = 1,939.46/x
  3. Step 3: Cross multiply
    7,486.13x = 11,229.14 × 1,939.46
  4. Step 4: Simplify right side
    7,486.13x = 21,778,416.57
  5. Step 5: Solve for x
    x = 21,778,416.57/7,486.13
  6. Step 6: Final answer
    x = 2,909.17

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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.