Home / 3,631.12-5,009.32-2,139.12

Finding the Fourth Proportional to 3,631.12, 5,009.32 and 2,139.12

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Solution

The fourth proportional to 3,631.12, 5,009.32 and 2,139.12 is: 2,951.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.12 : 5,009.32 = 2,139.12 : x
  2. Step 2: Convert to fraction form
    3,631.12/5,009.32 = 2,139.12/x
  3. Step 3: Cross multiply
    3,631.12x = 5,009.32 × 2,139.12
  4. Step 4: Simplify right side
    3,631.12x = 10,715,536.60
  5. Step 5: Solve for x
    x = 10,715,536.60/3,631.12
  6. Step 6: Final answer
    x = 2,951.03

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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.