Home / 1,785.20-2,677.80-1,631.30

Finding the Fourth Proportional to 1,785.20, 2,677.80 and 1,631.30

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Solution

The fourth proportional to 1,785.20, 2,677.80 and 1,631.30 is: 2,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.20 : 2,677.80 = 1,631.30 : x
  2. Step 2: Convert to fraction form
    1,785.20/2,677.80 = 1,631.30/x
  3. Step 3: Cross multiply
    1,785.20x = 2,677.80 × 1,631.30
  4. Step 4: Simplify right side
    1,785.20x = 4,368,295.14
  5. Step 5: Solve for x
    x = 4,368,295.14/1,785.20
  6. Step 6: Final answer
    x = 2,446.95

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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.