Home / 6,912.07-10,369.47-1,981.73

Finding the Fourth Proportional to 6,912.07, 10,369.47 and 1,981.73

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Solution

The fourth proportional to 6,912.07, 10,369.47 and 1,981.73 is: 2,972.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.07 : 10,369.47 = 1,981.73 : x
  2. Step 2: Convert to fraction form
    6,912.07/10,369.47 = 1,981.73/x
  3. Step 3: Cross multiply
    6,912.07x = 10,369.47 × 1,981.73
  4. Step 4: Simplify right side
    6,912.07x = 20,549,489.78
  5. Step 5: Solve for x
    x = 20,549,489.78/6,912.07
  6. Step 6: Final answer
    x = 2,972.99

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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.