Home / 2,543.63-3,815.45-1,005.71

Finding the Fourth Proportional to 2,543.63, 3,815.45 and 1,005.71

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Solution

The fourth proportional to 2,543.63, 3,815.45 and 1,005.71 is: 1,508.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.63 : 3,815.45 = 1,005.71 : x
  2. Step 2: Convert to fraction form
    2,543.63/3,815.45 = 1,005.71/x
  3. Step 3: Cross multiply
    2,543.63x = 3,815.45 × 1,005.71
  4. Step 4: Simplify right side
    2,543.63x = 3,837,212.11
  5. Step 5: Solve for x
    x = 3,837,212.11/2,543.63
  6. Step 6: Final answer
    x = 1,508.56

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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.