Home / 1,620.69-2,431.17-696.27

Finding the Fourth Proportional to 1,620.69, 2,431.17 and 696.27

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Solution

The fourth proportional to 1,620.69, 2,431.17 and 696.27 is: 1,044.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.69 : 2,431.17 = 696.27 : x
  2. Step 2: Convert to fraction form
    1,620.69/2,431.17 = 696.27/x
  3. Step 3: Cross multiply
    1,620.69x = 2,431.17 × 696.27
  4. Step 4: Simplify right side
    1,620.69x = 1,692,750.74
  5. Step 5: Solve for x
    x = 1,692,750.74/1,620.69
  6. Step 6: Final answer
    x = 1,044.46

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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.