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Finding the Fourth Proportional to 7,884.08, 10,879.47 and 4,347.21

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Solution

The fourth proportional to 7,884.08, 10,879.47 and 4,347.21 is: 5,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884.08 : 10,879.47 = 4,347.21 : x
  2. Step 2: Convert to fraction form
    7,884.08/10,879.47 = 4,347.21/x
  3. Step 3: Cross multiply
    7,884.08x = 10,879.47 × 4,347.21
  4. Step 4: Simplify right side
    7,884.08x = 47,295,393.80
  5. Step 5: Solve for x
    x = 47,295,393.80/7,884.08
  6. Step 6: Final answer
    x = 5,998.85

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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.