Home / 7,840.50-11,761.56-3,162.12

Finding the Fourth Proportional to 7,840.50, 11,761.56 and 3,162.12

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Solution

The fourth proportional to 7,840.50, 11,761.56 and 3,162.12 is: 4,743.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.50 : 11,761.56 = 3,162.12 : x
  2. Step 2: Convert to fraction form
    7,840.50/11,761.56 = 3,162.12/x
  3. Step 3: Cross multiply
    7,840.50x = 11,761.56 × 3,162.12
  4. Step 4: Simplify right side
    7,840.50x = 37,191,464.11
  5. Step 5: Solve for x
    x = 37,191,464.11/7,840.50
  6. Step 6: Final answer
    x = 4,743.51

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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.