Home / 2,445.12-3,669.98-1,213.11

Finding the Fourth Proportional to 2,445.12, 3,669.98 and 1,213.11

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Solution

The fourth proportional to 2,445.12, 3,669.98 and 1,213.11 is: 1,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,445.12 : 3,669.98 = 1,213.11 : x
  2. Step 2: Convert to fraction form
    2,445.12/3,669.98 = 1,213.11/x
  3. Step 3: Cross multiply
    2,445.12x = 3,669.98 × 1,213.11
  4. Step 4: Simplify right side
    2,445.12x = 4,452,083.37
  5. Step 5: Solve for x
    x = 4,452,083.37/2,445.12
  6. Step 6: Final answer
    x = 1,820.80

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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.