Home / 3,612.56-5,418.83-1,420.08

Finding the Fourth Proportional to 3,612.56, 5,418.83 and 1,420.08

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Solution

The fourth proportional to 3,612.56, 5,418.83 and 1,420.08 is: 2,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.56 : 5,418.83 = 1,420.08 : x
  2. Step 2: Convert to fraction form
    3,612.56/5,418.83 = 1,420.08/x
  3. Step 3: Cross multiply
    3,612.56x = 5,418.83 × 1,420.08
  4. Step 4: Simplify right side
    3,612.56x = 7,695,165.01
  5. Step 5: Solve for x
    x = 7,695,165.01/3,612.56
  6. Step 6: Final answer
    x = 2,130.12

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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.