Home / 1,680.31-2,508.21-1,556.79

Finding the Fourth Proportional to 1,680.31, 2,508.21 and 1,556.79

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Solution

The fourth proportional to 1,680.31, 2,508.21 and 1,556.79 is: 2,323.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.31 : 2,508.21 = 1,556.79 : x
  2. Step 2: Convert to fraction form
    1,680.31/2,508.21 = 1,556.79/x
  3. Step 3: Cross multiply
    1,680.31x = 2,508.21 × 1,556.79
  4. Step 4: Simplify right side
    1,680.31x = 3,904,756.25
  5. Step 5: Solve for x
    x = 3,904,756.25/1,680.31
  6. Step 6: Final answer
    x = 2,323.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.