Home / 1,640.31-2,260.94-1,079.67

Finding the Fourth Proportional to 1,640.31, 2,260.94 and 1,079.67

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Solution

The fourth proportional to 1,640.31, 2,260.94 and 1,079.67 is: 1,488.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.31 : 2,260.94 = 1,079.67 : x
  2. Step 2: Convert to fraction form
    1,640.31/2,260.94 = 1,079.67/x
  3. Step 3: Cross multiply
    1,640.31x = 2,260.94 × 1,079.67
  4. Step 4: Simplify right side
    1,640.31x = 2,441,063.69
  5. Step 5: Solve for x
    x = 2,441,063.69/1,640.31
  6. Step 6: Final answer
    x = 1,488.17

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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.