Home / 6,912.32-10,368.44-1,981.92

Finding the Fourth Proportional to 6,912.32, 10,368.44 and 1,981.92

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Solution

The fourth proportional to 6,912.32, 10,368.44 and 1,981.92 is: 2,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.32 : 10,368.44 = 1,981.92 : x
  2. Step 2: Convert to fraction form
    6,912.32/10,368.44 = 1,981.92/x
  3. Step 3: Cross multiply
    6,912.32x = 10,368.44 × 1,981.92
  4. Step 4: Simplify right side
    6,912.32x = 20,549,418.60
  5. Step 5: Solve for x
    x = 20,549,418.60/6,912.32
  6. Step 6: Final answer
    x = 2,972.87

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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.