Home / 1,628.57-2,442.86-1,143.79

Finding the Fourth Proportional to 1,628.57, 2,442.86 and 1,143.79

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Solution

The fourth proportional to 1,628.57, 2,442.86 and 1,143.79 is: 1,715.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.57 : 2,442.86 = 1,143.79 : x
  2. Step 2: Convert to fraction form
    1,628.57/2,442.86 = 1,143.79/x
  3. Step 3: Cross multiply
    1,628.57x = 2,442.86 × 1,143.79
  4. Step 4: Simplify right side
    1,628.57x = 2,794,111.30
  5. Step 5: Solve for x
    x = 2,794,111.30/1,628.57
  6. Step 6: Final answer
    x = 1,715.68

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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.