Home / 2,421.12-3,340.16-1,372.96

Finding the Fourth Proportional to 2,421.12, 3,340.16 and 1,372.96

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Solution

The fourth proportional to 2,421.12, 3,340.16 and 1,372.96 is: 1,894.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.12 : 3,340.16 = 1,372.96 : x
  2. Step 2: Convert to fraction form
    2,421.12/3,340.16 = 1,372.96/x
  3. Step 3: Cross multiply
    2,421.12x = 3,340.16 × 1,372.96
  4. Step 4: Simplify right side
    2,421.12x = 4,585,906.07
  5. Step 5: Solve for x
    x = 4,585,906.07/2,421.12
  6. Step 6: Final answer
    x = 1,894.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.