Home / 2,910.20-4,363.79-1,428.77

Finding the Fourth Proportional to 2,910.20, 4,363.79 and 1,428.77

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Solution

The fourth proportional to 2,910.20, 4,363.79 and 1,428.77 is: 2,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.20 : 4,363.79 = 1,428.77 : x
  2. Step 2: Convert to fraction form
    2,910.20/4,363.79 = 1,428.77/x
  3. Step 3: Cross multiply
    2,910.20x = 4,363.79 × 1,428.77
  4. Step 4: Simplify right side
    2,910.20x = 6,234,852.24
  5. Step 5: Solve for x
    x = 6,234,852.24/2,910.20
  6. Step 6: Final answer
    x = 2,142.41

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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.