Home / 7,631.70-11,447.44-3,129.18

Finding the Fourth Proportional to 7,631.70, 11,447.44 and 3,129.18

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Solution

The fourth proportional to 7,631.70, 11,447.44 and 3,129.18 is: 4,693.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.70 : 11,447.44 = 3,129.18 : x
  2. Step 2: Convert to fraction form
    7,631.70/11,447.44 = 3,129.18/x
  3. Step 3: Cross multiply
    7,631.70x = 11,447.44 × 3,129.18
  4. Step 4: Simplify right side
    7,631.70x = 35,821,100.30
  5. Step 5: Solve for x
    x = 35,821,100.30/7,631.70
  6. Step 6: Final answer
    x = 4,693.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.