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Finding the Fourth Proportional to 7,381.70, 11,079.49 and 4,918.26

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Solution

The fourth proportional to 7,381.70, 11,079.49 and 4,918.26 is: 7,382.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.70 : 11,079.49 = 4,918.26 : x
  2. Step 2: Convert to fraction form
    7,381.70/11,079.49 = 4,918.26/x
  3. Step 3: Cross multiply
    7,381.70x = 11,079.49 × 4,918.26
  4. Step 4: Simplify right side
    7,381.70x = 54,491,812.49
  5. Step 5: Solve for x
    x = 54,491,812.49/7,381.70
  6. Step 6: Final answer
    x = 7,382.01

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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.