Home / 2,607.78-3,911.58-1,220.61

Finding the Fourth Proportional to 2,607.78, 3,911.58 and 1,220.61

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Solution

The fourth proportional to 2,607.78, 3,911.58 and 1,220.61 is: 1,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,607.78 : 3,911.58 = 1,220.61 : x
  2. Step 2: Convert to fraction form
    2,607.78/3,911.58 = 1,220.61/x
  3. Step 3: Cross multiply
    2,607.78x = 3,911.58 × 1,220.61
  4. Step 4: Simplify right side
    2,607.78x = 4,774,513.66
  5. Step 5: Solve for x
    x = 4,774,513.66/2,607.78
  6. Step 6: Final answer
    x = 1,830.87

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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.