Home / 6,621.80-9,138.11-3,637.56

Finding the Fourth Proportional to 6,621.80, 9,138.11 and 3,637.56

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Solution

The fourth proportional to 6,621.80, 9,138.11 and 3,637.56 is: 5,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.80 : 9,138.11 = 3,637.56 : x
  2. Step 2: Convert to fraction form
    6,621.80/9,138.11 = 3,637.56/x
  3. Step 3: Cross multiply
    6,621.80x = 9,138.11 × 3,637.56
  4. Step 4: Simplify right side
    6,621.80x = 33,240,405.22
  5. Step 5: Solve for x
    x = 33,240,405.22/6,621.80
  6. Step 6: Final answer
    x = 5,019.85

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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.