Home / 7,121.94-10,677.78-2,678.92

Finding the Fourth Proportional to 7,121.94, 10,677.78 and 2,678.92

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Solution

The fourth proportional to 7,121.94, 10,677.78 and 2,678.92 is: 4,016.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.94 : 10,677.78 = 2,678.92 : x
  2. Step 2: Convert to fraction form
    7,121.94/10,677.78 = 2,678.92/x
  3. Step 3: Cross multiply
    7,121.94x = 10,677.78 × 2,678.92
  4. Step 4: Simplify right side
    7,121.94x = 28,604,918.40
  5. Step 5: Solve for x
    x = 28,604,918.40/7,121.94
  6. Step 6: Final answer
    x = 4,016.45

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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.