Home / 2,778.43-4,165.68-1,390.77

Finding the Fourth Proportional to 2,778.43, 4,165.68 and 1,390.77

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Solution

The fourth proportional to 2,778.43, 4,165.68 and 1,390.77 is: 2,085.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.43 : 4,165.68 = 1,390.77 : x
  2. Step 2: Convert to fraction form
    2,778.43/4,165.68 = 1,390.77/x
  3. Step 3: Cross multiply
    2,778.43x = 4,165.68 × 1,390.77
  4. Step 4: Simplify right side
    2,778.43x = 5,793,502.77
  5. Step 5: Solve for x
    x = 5,793,502.77/2,778.43
  6. Step 6: Final answer
    x = 2,085.17

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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.