Home / 6,621.30-9,139.23-3,790.26

Finding the Fourth Proportional to 6,621.30, 9,139.23 and 3,790.26

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Solution

The fourth proportional to 6,621.30, 9,139.23 and 3,790.26 is: 5,231.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.30 : 9,139.23 = 3,790.26 : x
  2. Step 2: Convert to fraction form
    6,621.30/9,139.23 = 3,790.26/x
  3. Step 3: Cross multiply
    6,621.30x = 9,139.23 × 3,790.26
  4. Step 4: Simplify right side
    6,621.30x = 34,640,057.90
  5. Step 5: Solve for x
    x = 34,640,057.90/6,621.30
  6. Step 6: Final answer
    x = 5,231.61

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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.