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Finding the Fourth Proportional to 7,887.47, 11,829.37 and 2,339.48

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Solution

The fourth proportional to 7,887.47, 11,829.37 and 2,339.48 is: 3,508.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.47 : 11,829.37 = 2,339.48 : x
  2. Step 2: Convert to fraction form
    7,887.47/11,829.37 = 2,339.48/x
  3. Step 3: Cross multiply
    7,887.47x = 11,829.37 × 2,339.48
  4. Step 4: Simplify right side
    7,887.47x = 27,674,574.53
  5. Step 5: Solve for x
    x = 27,674,574.53/7,887.47
  6. Step 6: Final answer
    x = 3,508.68

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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.