Home / 7,178.80-10,764.94-2,561.92

Finding the Fourth Proportional to 7,178.80, 10,764.94 and 2,561.92

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Solution

The fourth proportional to 7,178.80, 10,764.94 and 2,561.92 is: 3,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.80 : 10,764.94 = 2,561.92 : x
  2. Step 2: Convert to fraction form
    7,178.80/10,764.94 = 2,561.92/x
  3. Step 3: Cross multiply
    7,178.80x = 10,764.94 × 2,561.92
  4. Step 4: Simplify right side
    7,178.80x = 27,578,915.08
  5. Step 5: Solve for x
    x = 27,578,915.08/7,178.80
  6. Step 6: Final answer
    x = 3,841.72

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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.