Home / 7,478.78-11,203.79-4,181.87

Finding the Fourth Proportional to 7,478.78, 11,203.79 and 4,181.87

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Solution

The fourth proportional to 7,478.78, 11,203.79 and 4,181.87 is: 6,264.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.78 : 11,203.79 = 4,181.87 : x
  2. Step 2: Convert to fraction form
    7,478.78/11,203.79 = 4,181.87/x
  3. Step 3: Cross multiply
    7,478.78x = 11,203.79 × 4,181.87
  4. Step 4: Simplify right side
    7,478.78x = 46,852,716.36
  5. Step 5: Solve for x
    x = 46,852,716.36/7,478.78
  6. Step 6: Final answer
    x = 6,264.76

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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.