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Finding the Fourth Proportional to 5,509.54, 7,606.98 and 3,719.74

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Solution

The fourth proportional to 5,509.54, 7,606.98 and 3,719.74 is: 5,135.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.54 : 7,606.98 = 3,719.74 : x
  2. Step 2: Convert to fraction form
    5,509.54/7,606.98 = 3,719.74/x
  3. Step 3: Cross multiply
    5,509.54x = 7,606.98 × 3,719.74
  4. Step 4: Simplify right side
    5,509.54x = 28,295,987.79
  5. Step 5: Solve for x
    x = 28,295,987.79/5,509.54
  6. Step 6: Final answer
    x = 5,135.82

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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.