Home / 2,689.19-3,712.82-2,408.93

Finding the Fourth Proportional to 2,689.19, 3,712.82 and 2,408.93

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Solution

The fourth proportional to 2,689.19, 3,712.82 and 2,408.93 is: 3,325.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.19 : 3,712.82 = 2,408.93 : x
  2. Step 2: Convert to fraction form
    2,689.19/3,712.82 = 2,408.93/x
  3. Step 3: Cross multiply
    2,689.19x = 3,712.82 × 2,408.93
  4. Step 4: Simplify right side
    2,689.19x = 8,943,892.87
  5. Step 5: Solve for x
    x = 8,943,892.87/2,689.19
  6. Step 6: Final answer
    x = 3,325.87

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1.5x scale

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.