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Finding the Fourth Proportional to 6,672.87, 10,009.80 and 1,992.78

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Solution

The fourth proportional to 6,672.87, 10,009.80 and 1,992.78 is: 2,989.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.87 : 10,009.80 = 1,992.78 : x
  2. Step 2: Convert to fraction form
    6,672.87/10,009.80 = 1,992.78/x
  3. Step 3: Cross multiply
    6,672.87x = 10,009.80 × 1,992.78
  4. Step 4: Simplify right side
    6,672.87x = 19,947,329.24
  5. Step 5: Solve for x
    x = 19,947,329.24/6,672.87
  6. Step 6: Final answer
    x = 2,989.32

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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.