Home / 3,609.48-5,410.60-1,415.20

Finding the Fourth Proportional to 3,609.48, 5,410.60 and 1,415.20

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Solution

The fourth proportional to 3,609.48, 5,410.60 and 1,415.20 is: 2,121.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.48 : 5,410.60 = 1,415.20 : x
  2. Step 2: Convert to fraction form
    3,609.48/5,410.60 = 1,415.20/x
  3. Step 3: Cross multiply
    3,609.48x = 5,410.60 × 1,415.20
  4. Step 4: Simplify right side
    3,609.48x = 7,657,081.12
  5. Step 5: Solve for x
    x = 7,657,081.12/3,609.48
  6. Step 6: Final answer
    x = 2,121.38

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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.