Home / 7,278.23-10,919.79-2,894.51

Finding the Fourth Proportional to 7,278.23, 10,919.79 and 2,894.51

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Solution

The fourth proportional to 7,278.23, 10,919.79 and 2,894.51 is: 4,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.23 : 10,919.79 = 2,894.51 : x
  2. Step 2: Convert to fraction form
    7,278.23/10,919.79 = 2,894.51/x
  3. Step 3: Cross multiply
    7,278.23x = 10,919.79 × 2,894.51
  4. Step 4: Simplify right side
    7,278.23x = 31,607,468.65
  5. Step 5: Solve for x
    x = 31,607,468.65/7,278.23
  6. Step 6: Final answer
    x = 4,342.74

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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.