Home / 5,155.20-7,732.92-1,259.64

Finding the Fourth Proportional to 5,155.20, 7,732.92 and 1,259.64

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Solution

The fourth proportional to 5,155.20, 7,732.92 and 1,259.64 is: 1,889.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.20 : 7,732.92 = 1,259.64 : x
  2. Step 2: Convert to fraction form
    5,155.20/7,732.92 = 1,259.64/x
  3. Step 3: Cross multiply
    5,155.20x = 7,732.92 × 1,259.64
  4. Step 4: Simplify right side
    5,155.20x = 9,740,695.35
  5. Step 5: Solve for x
    x = 9,740,695.35/5,155.20
  6. Step 6: Final answer
    x = 1,889.49

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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.