Home / 2,800.30-3,864.21-1,665.91

Finding the Fourth Proportional to 2,800.30, 3,864.21 and 1,665.91

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Solution

The fourth proportional to 2,800.30, 3,864.21 and 1,665.91 is: 2,298.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.30 : 3,864.21 = 1,665.91 : x
  2. Step 2: Convert to fraction form
    2,800.30/3,864.21 = 1,665.91/x
  3. Step 3: Cross multiply
    2,800.30x = 3,864.21 × 1,665.91
  4. Step 4: Simplify right side
    2,800.30x = 6,437,420.59
  5. Step 5: Solve for x
    x = 6,437,420.59/2,800.30
  6. Step 6: Final answer
    x = 2,298.83

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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.