Home / 1,788.52-2,467.90-1,089.76

Finding the Fourth Proportional to 1,788.52, 2,467.90 and 1,089.76

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Solution

The fourth proportional to 1,788.52, 2,467.90 and 1,089.76 is: 1,503.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.52 : 2,467.90 = 1,089.76 : x
  2. Step 2: Convert to fraction form
    1,788.52/2,467.90 = 1,089.76/x
  3. Step 3: Cross multiply
    1,788.52x = 2,467.90 × 1,089.76
  4. Step 4: Simplify right side
    1,788.52x = 2,689,418.70
  5. Step 5: Solve for x
    x = 2,689,418.70/1,788.52
  6. Step 6: Final answer
    x = 1,503.71

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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.