Home / 2,431.22-3,638.19-1,780.34

Finding the Fourth Proportional to 2,431.22, 3,638.19 and 1,780.34

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Solution

The fourth proportional to 2,431.22, 3,638.19 and 1,780.34 is: 2,664.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.22 : 3,638.19 = 1,780.34 : x
  2. Step 2: Convert to fraction form
    2,431.22/3,638.19 = 1,780.34/x
  3. Step 3: Cross multiply
    2,431.22x = 3,638.19 × 1,780.34
  4. Step 4: Simplify right side
    2,431.22x = 6,477,215.18
  5. Step 5: Solve for x
    x = 6,477,215.18/2,431.22
  6. Step 6: Final answer
    x = 2,664.18

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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.