Home / 7,611.82-10,500.68-4,777.78

Finding the Fourth Proportional to 7,611.82, 10,500.68 and 4,777.78

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Solution

The fourth proportional to 7,611.82, 10,500.68 and 4,777.78 is: 6,591.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.82 : 10,500.68 = 4,777.78 : x
  2. Step 2: Convert to fraction form
    7,611.82/10,500.68 = 4,777.78/x
  3. Step 3: Cross multiply
    7,611.82x = 10,500.68 × 4,777.78
  4. Step 4: Simplify right side
    7,611.82x = 50,169,938.89
  5. Step 5: Solve for x
    x = 50,169,938.89/7,611.82
  6. Step 6: Final answer
    x = 6,591.06

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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.