Home / 2,857.91-4,275.52-1,800.05

Finding the Fourth Proportional to 2,857.91, 4,275.52 and 1,800.05

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Solution

The fourth proportional to 2,857.91, 4,275.52 and 1,800.05 is: 2,692.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.91 : 4,275.52 = 1,800.05 : x
  2. Step 2: Convert to fraction form
    2,857.91/4,275.52 = 1,800.05/x
  3. Step 3: Cross multiply
    2,857.91x = 4,275.52 × 1,800.05
  4. Step 4: Simplify right side
    2,857.91x = 7,696,123.90
  5. Step 5: Solve for x
    x = 7,696,123.90/2,857.91
  6. Step 6: Final answer
    x = 2,692.93

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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.