Home / 2,708.40-4,053.84-1,408.08

Finding the Fourth Proportional to 2,708.40, 4,053.84 and 1,408.08

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Solution

The fourth proportional to 2,708.40, 4,053.84 and 1,408.08 is: 2,107.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708.40 : 4,053.84 = 1,408.08 : x
  2. Step 2: Convert to fraction form
    2,708.40/4,053.84 = 1,408.08/x
  3. Step 3: Cross multiply
    2,708.40x = 4,053.84 × 1,408.08
  4. Step 4: Simplify right side
    2,708.40x = 5,708,131.03
  5. Step 5: Solve for x
    x = 5,708,131.03/2,708.40
  6. Step 6: Final answer
    x = 2,107.57

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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.