Home / 1,910.11-2,860.30-1,258.87

Finding the Fourth Proportional to 1,910.11, 2,860.30 and 1,258.87

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Solution

The fourth proportional to 1,910.11, 2,860.30 and 1,258.87 is: 1,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.11 : 2,860.30 = 1,258.87 : x
  2. Step 2: Convert to fraction form
    1,910.11/2,860.30 = 1,258.87/x
  3. Step 3: Cross multiply
    1,910.11x = 2,860.30 × 1,258.87
  4. Step 4: Simplify right side
    1,910.11x = 3,600,745.86
  5. Step 5: Solve for x
    x = 3,600,745.86/1,910.11
  6. Step 6: Final answer
    x = 1,885.10

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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.