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Finding the Fourth Proportional to 7,813.72, 11,720.24 and 2,266.94

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Solution

The fourth proportional to 7,813.72, 11,720.24 and 2,266.94 is: 3,400.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.72 : 11,720.24 = 2,266.94 : x
  2. Step 2: Convert to fraction form
    7,813.72/11,720.24 = 2,266.94/x
  3. Step 3: Cross multiply
    7,813.72x = 11,720.24 × 2,266.94
  4. Step 4: Simplify right side
    7,813.72x = 26,569,080.87
  5. Step 5: Solve for x
    x = 26,569,080.87/7,813.72
  6. Step 6: Final answer
    x = 3,400.31

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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.