Home / 6,972.23-9,621.87-3,947.11

Finding the Fourth Proportional to 6,972.23, 9,621.87 and 3,947.11

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Solution

The fourth proportional to 6,972.23, 9,621.87 and 3,947.11 is: 5,447.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,972.23 : 9,621.87 = 3,947.11 : x
  2. Step 2: Convert to fraction form
    6,972.23/9,621.87 = 3,947.11/x
  3. Step 3: Cross multiply
    6,972.23x = 9,621.87 × 3,947.11
  4. Step 4: Simplify right side
    6,972.23x = 37,978,579.30
  5. Step 5: Solve for x
    x = 37,978,579.30/6,972.23
  6. Step 6: Final answer
    x = 5,447.12

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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.