Home / 2,891.03-3,989.12-1,631.93

Finding the Fourth Proportional to 2,891.03, 3,989.12 and 1,631.93

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Solution

The fourth proportional to 2,891.03, 3,989.12 and 1,631.93 is: 2,251.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.03 : 3,989.12 = 1,631.93 : x
  2. Step 2: Convert to fraction form
    2,891.03/3,989.12 = 1,631.93/x
  3. Step 3: Cross multiply
    2,891.03x = 3,989.12 × 1,631.93
  4. Step 4: Simplify right side
    2,891.03x = 6,509,936.50
  5. Step 5: Solve for x
    x = 6,509,936.50/2,891.03
  6. Step 6: Final answer
    x = 2,251.77

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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.