Home / 7,278.92-10,918.38-3,118.58

Finding the Fourth Proportional to 7,278.92, 10,918.38 and 3,118.58

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Solution

The fourth proportional to 7,278.92, 10,918.38 and 3,118.58 is: 4,677.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.92 : 10,918.38 = 3,118.58 : x
  2. Step 2: Convert to fraction form
    7,278.92/10,918.38 = 3,118.58/x
  3. Step 3: Cross multiply
    7,278.92x = 10,918.38 × 3,118.58
  4. Step 4: Simplify right side
    7,278.92x = 34,049,841.50
  5. Step 5: Solve for x
    x = 34,049,841.50/7,278.92
  6. Step 6: Final answer
    x = 4,677.87

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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.