Home / 2,390.76-3,586.95-1,221.26

Finding the Fourth Proportional to 2,390.76, 3,586.95 and 1,221.26

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Solution

The fourth proportional to 2,390.76, 3,586.95 and 1,221.26 is: 1,832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.76 : 3,586.95 = 1,221.26 : x
  2. Step 2: Convert to fraction form
    2,390.76/3,586.95 = 1,221.26/x
  3. Step 3: Cross multiply
    2,390.76x = 3,586.95 × 1,221.26
  4. Step 4: Simplify right side
    2,390.76x = 4,380,580.62
  5. Step 5: Solve for x
    x = 4,380,580.62/2,390.76
  6. Step 6: Final answer
    x = 1,832.30

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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.