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Finding the Fourth Proportional to 7,887.01, 11,813.55 and 3,720.77

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Solution

The fourth proportional to 7,887.01, 11,813.55 and 3,720.77 is: 5,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.01 : 11,813.55 = 3,720.77 : x
  2. Step 2: Convert to fraction form
    7,887.01/11,813.55 = 3,720.77/x
  3. Step 3: Cross multiply
    7,887.01x = 11,813.55 × 3,720.77
  4. Step 4: Simplify right side
    7,887.01x = 43,955,502.43
  5. Step 5: Solve for x
    x = 43,955,502.43/7,887.01
  6. Step 6: Final answer
    x = 5,573.15

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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.