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Finding the Fourth Proportional to 5,512.76, 7,607.40 and 3,155.12

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Solution

The fourth proportional to 5,512.76, 7,607.40 and 3,155.12 is: 4,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,512.76 : 7,607.40 = 3,155.12 : x
  2. Step 2: Convert to fraction form
    5,512.76/7,607.40 = 3,155.12/x
  3. Step 3: Cross multiply
    5,512.76x = 7,607.40 × 3,155.12
  4. Step 4: Simplify right side
    5,512.76x = 24,002,259.89
  5. Step 5: Solve for x
    x = 24,002,259.89/5,512.76
  6. Step 6: Final answer
    x = 4,353.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.