Home / 2,076.70-3,115.05-1,254.55

Finding the Fourth Proportional to 2,076.70, 3,115.05 and 1,254.55

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Solution

The fourth proportional to 2,076.70, 3,115.05 and 1,254.55 is: 1,881.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.70 : 3,115.05 = 1,254.55 : x
  2. Step 2: Convert to fraction form
    2,076.70/3,115.05 = 1,254.55/x
  3. Step 3: Cross multiply
    2,076.70x = 3,115.05 × 1,254.55
  4. Step 4: Simplify right side
    2,076.70x = 3,907,985.98
  5. Step 5: Solve for x
    x = 3,907,985.98/2,076.70
  6. Step 6: Final answer
    x = 1,881.83

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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.