Home / 7,983.95-11,975.92-2,140.71

Finding the Fourth Proportional to 7,983.95, 11,975.92 and 2,140.71

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Solution

The fourth proportional to 7,983.95, 11,975.92 and 2,140.71 is: 3,211.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.95 : 11,975.92 = 2,140.71 : x
  2. Step 2: Convert to fraction form
    7,983.95/11,975.92 = 2,140.71/x
  3. Step 3: Cross multiply
    7,983.95x = 11,975.92 × 2,140.71
  4. Step 4: Simplify right side
    7,983.95x = 25,636,977.05
  5. Step 5: Solve for x
    x = 25,636,977.05/7,983.95
  6. Step 6: Final answer
    x = 3,211.07

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Double scale
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Similar ratio
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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.