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Finding the Fourth Proportional to 5,509.52, 7,603.50 and 3,119.50

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Solution

The fourth proportional to 5,509.52, 7,603.50 and 3,119.50 is: 4,305.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.52 : 7,603.50 = 3,119.50 : x
  2. Step 2: Convert to fraction form
    5,509.52/7,603.50 = 3,119.50/x
  3. Step 3: Cross multiply
    5,509.52x = 7,603.50 × 3,119.50
  4. Step 4: Simplify right side
    5,509.52x = 23,719,118.25
  5. Step 5: Solve for x
    x = 23,719,118.25/5,509.52
  6. Step 6: Final answer
    x = 4,305.12

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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.