Home / 6,631.19-9,147.21-3,977.04

Finding the Fourth Proportional to 6,631.19, 9,147.21 and 3,977.04

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Solution

The fourth proportional to 6,631.19, 9,147.21 and 3,977.04 is: 5,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.19 : 9,147.21 = 3,977.04 : x
  2. Step 2: Convert to fraction form
    6,631.19/9,147.21 = 3,977.04/x
  3. Step 3: Cross multiply
    6,631.19x = 9,147.21 × 3,977.04
  4. Step 4: Simplify right side
    6,631.19x = 36,378,820.06
  5. Step 5: Solve for x
    x = 36,378,820.06/6,631.19
  6. Step 6: Final answer
    x = 5,486.02

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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.