Home / 3,500.85-5,251.23-1,420.36

Finding the Fourth Proportional to 3,500.85, 5,251.23 and 1,420.36

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Solution

The fourth proportional to 3,500.85, 5,251.23 and 1,420.36 is: 2,130.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.85 : 5,251.23 = 1,420.36 : x
  2. Step 2: Convert to fraction form
    3,500.85/5,251.23 = 1,420.36/x
  3. Step 3: Cross multiply
    3,500.85x = 5,251.23 × 1,420.36
  4. Step 4: Simplify right side
    3,500.85x = 7,458,610.79
  5. Step 5: Solve for x
    x = 7,458,610.79/3,500.85
  6. Step 6: Final answer
    x = 2,130.52

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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.