Home / 2,906.78-4,011.32-1,580.50

Finding the Fourth Proportional to 2,906.78, 4,011.32 and 1,580.50

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Solution

The fourth proportional to 2,906.78, 4,011.32 and 1,580.50 is: 2,181.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906.78 : 4,011.32 = 1,580.50 : x
  2. Step 2: Convert to fraction form
    2,906.78/4,011.32 = 1,580.50/x
  3. Step 3: Cross multiply
    2,906.78x = 4,011.32 × 1,580.50
  4. Step 4: Simplify right side
    2,906.78x = 6,339,863.30
  5. Step 5: Solve for x
    x = 6,339,863.30/2,906.78
  6. Step 6: Final answer
    x = 2,181.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.