Home / 2,489.84-3,733.55-1,421.15

Finding the Fourth Proportional to 2,489.84, 3,733.55 and 1,421.15

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Solution

The fourth proportional to 2,489.84, 3,733.55 and 1,421.15 is: 2,131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.84 : 3,733.55 = 1,421.15 : x
  2. Step 2: Convert to fraction form
    2,489.84/3,733.55 = 1,421.15/x
  3. Step 3: Cross multiply
    2,489.84x = 3,733.55 × 1,421.15
  4. Step 4: Simplify right side
    2,489.84x = 5,305,908.81
  5. Step 5: Solve for x
    x = 5,305,908.81/2,489.84
  6. Step 6: Final answer
    x = 2,131.03

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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.