Home / 1,631.80-2,447.70-1,267.30

Finding the Fourth Proportional to 1,631.80, 2,447.70 and 1,267.30

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Solution

The fourth proportional to 1,631.80, 2,447.70 and 1,267.30 is: 1,900.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.80 : 2,447.70 = 1,267.30 : x
  2. Step 2: Convert to fraction form
    1,631.80/2,447.70 = 1,267.30/x
  3. Step 3: Cross multiply
    1,631.80x = 2,447.70 × 1,267.30
  4. Step 4: Simplify right side
    1,631.80x = 3,101,970.21
  5. Step 5: Solve for x
    x = 3,101,970.21/1,631.80
  6. Step 6: Final answer
    x = 1,900.95

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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.