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Finding the Fourth Proportional to 7,939.16, 11,910.29 and 2,392.23

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Solution

The fourth proportional to 7,939.16, 11,910.29 and 2,392.23 is: 3,588.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.16 : 11,910.29 = 2,392.23 : x
  2. Step 2: Convert to fraction form
    7,939.16/11,910.29 = 2,392.23/x
  3. Step 3: Cross multiply
    7,939.16x = 11,910.29 × 2,392.23
  4. Step 4: Simplify right side
    7,939.16x = 28,492,199.21
  5. Step 5: Solve for x
    x = 28,492,199.21/7,939.16
  6. Step 6: Final answer
    x = 3,588.82

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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.