Home / 2,519.64-3,775.41-1,420.74

Finding the Fourth Proportional to 2,519.64, 3,775.41 and 1,420.74

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Solution

The fourth proportional to 2,519.64, 3,775.41 and 1,420.74 is: 2,128.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.64 : 3,775.41 = 1,420.74 : x
  2. Step 2: Convert to fraction form
    2,519.64/3,775.41 = 1,420.74/x
  3. Step 3: Cross multiply
    2,519.64x = 3,775.41 × 1,420.74
  4. Step 4: Simplify right side
    2,519.64x = 5,363,876.00
  5. Step 5: Solve for x
    x = 5,363,876.00/2,519.64
  6. Step 6: Final answer
    x = 2,128.83

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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.