Home / 6,140.82-9,212.31-1,981.74

Finding the Fourth Proportional to 6,140.82, 9,212.31 and 1,981.74

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Solution

The fourth proportional to 6,140.82, 9,212.31 and 1,981.74 is: 2,972.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.82 : 9,212.31 = 1,981.74 : x
  2. Step 2: Convert to fraction form
    6,140.82/9,212.31 = 1,981.74/x
  3. Step 3: Cross multiply
    6,140.82x = 9,212.31 × 1,981.74
  4. Step 4: Simplify right side
    6,140.82x = 18,256,403.22
  5. Step 5: Solve for x
    x = 18,256,403.22/6,140.82
  6. Step 6: Final answer
    x = 2,972.96

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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.