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Finding the Fourth Proportional to 7,887.50, 10,884.80 and 4,351.31

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Solution

The fourth proportional to 7,887.50, 10,884.80 and 4,351.31 is: 6,004.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.50 : 10,884.80 = 4,351.31 : x
  2. Step 2: Convert to fraction form
    7,887.50/10,884.80 = 4,351.31/x
  3. Step 3: Cross multiply
    7,887.50x = 10,884.80 × 4,351.31
  4. Step 4: Simplify right side
    7,887.50x = 47,363,095.54
  5. Step 5: Solve for x
    x = 47,363,095.54/7,887.50
  6. Step 6: Final answer
    x = 6,004.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.