Home / 3,611.48-5,417.30-1,112.72

Finding the Fourth Proportional to 3,611.48, 5,417.30 and 1,112.72

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Solution

The fourth proportional to 3,611.48, 5,417.30 and 1,112.72 is: 1,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.48 : 5,417.30 = 1,112.72 : x
  2. Step 2: Convert to fraction form
    3,611.48/5,417.30 = 1,112.72/x
  3. Step 3: Cross multiply
    3,611.48x = 5,417.30 × 1,112.72
  4. Step 4: Simplify right side
    3,611.48x = 6,027,913.75
  5. Step 5: Solve for x
    x = 6,027,913.75/3,611.48
  6. Step 6: Final answer
    x = 1,669.10

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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.