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Finding the Fourth Proportional to 5,515.98, 7,612.22 and 3,158.88

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Solution

The fourth proportional to 5,515.98, 7,612.22 and 3,158.88 is: 4,359.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.98 : 7,612.22 = 3,158.88 : x
  2. Step 2: Convert to fraction form
    5,515.98/7,612.22 = 3,158.88/x
  3. Step 3: Cross multiply
    5,515.98x = 7,612.22 × 3,158.88
  4. Step 4: Simplify right side
    5,515.98x = 24,046,089.51
  5. Step 5: Solve for x
    x = 24,046,089.51/5,515.98
  6. Step 6: Final answer
    x = 4,359.35

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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.