Home / 6,621.87-9,138.20-3,637.76

Finding the Fourth Proportional to 6,621.87, 9,138.20 and 3,637.76

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Solution

The fourth proportional to 6,621.87, 9,138.20 and 3,637.76 is: 5,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.87 : 9,138.20 = 3,637.76 : x
  2. Step 2: Convert to fraction form
    6,621.87/9,138.20 = 3,637.76/x
  3. Step 3: Cross multiply
    6,621.87x = 9,138.20 × 3,637.76
  4. Step 4: Simplify right side
    6,621.87x = 33,242,514.55
  5. Step 5: Solve for x
    x = 33,242,514.55/6,621.87
  6. Step 6: Final answer
    x = 5,020.11

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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.