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Finding the Fourth Proportional to 7,290.70, 10,939.26 and 3,827.14

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Solution

The fourth proportional to 7,290.70, 10,939.26 and 3,827.14 is: 5,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.70 : 10,939.26 = 3,827.14 : x
  2. Step 2: Convert to fraction form
    7,290.70/10,939.26 = 3,827.14/x
  3. Step 3: Cross multiply
    7,290.70x = 10,939.26 × 3,827.14
  4. Step 4: Simplify right side
    7,290.70x = 41,866,079.52
  5. Step 5: Solve for x
    x = 41,866,079.52/7,290.70
  6. Step 6: Final answer
    x = 5,742.40

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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.