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Finding the Fourth Proportional to 3,987.93, 5,503.55 and 2,219.50

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Solution

The fourth proportional to 3,987.93, 5,503.55 and 2,219.50 is: 3,063.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.93 : 5,503.55 = 2,219.50 : x
  2. Step 2: Convert to fraction form
    3,987.93/5,503.55 = 2,219.50/x
  3. Step 3: Cross multiply
    3,987.93x = 5,503.55 × 2,219.50
  4. Step 4: Simplify right side
    3,987.93x = 12,215,125.01
  5. Step 5: Solve for x
    x = 12,215,125.01/3,987.93
  6. Step 6: Final answer
    x = 3,063.02

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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.