Home / 6,878.20-10,317.12-1,947.84

Finding the Fourth Proportional to 6,878.20, 10,317.12 and 1,947.84

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Solution

The fourth proportional to 6,878.20, 10,317.12 and 1,947.84 is: 2,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.20 : 10,317.12 = 1,947.84 : x
  2. Step 2: Convert to fraction form
    6,878.20/10,317.12 = 1,947.84/x
  3. Step 3: Cross multiply
    6,878.20x = 10,317.12 × 1,947.84
  4. Step 4: Simplify right side
    6,878.20x = 20,096,099.02
  5. Step 5: Solve for x
    x = 20,096,099.02/6,878.20
  6. Step 6: Final answer
    x = 2,921.71

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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.