Home / 7,178.87-10,761.81-2,560.79

Finding the Fourth Proportional to 7,178.87, 10,761.81 and 2,560.79

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Solution

The fourth proportional to 7,178.87, 10,761.81 and 2,560.79 is: 3,838.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.87 : 10,761.81 = 2,560.79 : x
  2. Step 2: Convert to fraction form
    7,178.87/10,761.81 = 2,560.79/x
  3. Step 3: Cross multiply
    7,178.87x = 10,761.81 × 2,560.79
  4. Step 4: Simplify right side
    7,178.87x = 27,558,681.62
  5. Step 5: Solve for x
    x = 27,558,681.62/7,178.87
  6. Step 6: Final answer
    x = 3,838.86

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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.