Home / 7,718.56-10,651.64-4,181.78

Finding the Fourth Proportional to 7,718.56, 10,651.64 and 4,181.78

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Solution

The fourth proportional to 7,718.56, 10,651.64 and 4,181.78 is: 5,770.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.56 : 10,651.64 = 4,181.78 : x
  2. Step 2: Convert to fraction form
    7,718.56/10,651.64 = 4,181.78/x
  3. Step 3: Cross multiply
    7,718.56x = 10,651.64 × 4,181.78
  4. Step 4: Simplify right side
    7,718.56x = 44,542,815.12
  5. Step 5: Solve for x
    x = 44,542,815.12/7,718.56
  6. Step 6: Final answer
    x = 5,770.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.