Home / 7,278.39-10,917.51-3,114.87

Finding the Fourth Proportional to 7,278.39, 10,917.51 and 3,114.87

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Solution

The fourth proportional to 7,278.39, 10,917.51 and 3,114.87 is: 4,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.39 : 10,917.51 = 3,114.87 : x
  2. Step 2: Convert to fraction form
    7,278.39/10,917.51 = 3,114.87/x
  3. Step 3: Cross multiply
    7,278.39x = 10,917.51 × 3,114.87
  4. Step 4: Simplify right side
    7,278.39x = 34,006,624.37
  5. Step 5: Solve for x
    x = 34,006,624.37/7,278.39
  6. Step 6: Final answer
    x = 4,672.27

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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.