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Finding the Fourth Proportional to 4,913.33, 7,369.90 and 1,215.56

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Solution

The fourth proportional to 4,913.33, 7,369.90 and 1,215.56 is: 1,823.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.33 : 7,369.90 = 1,215.56 : x
  2. Step 2: Convert to fraction form
    4,913.33/7,369.90 = 1,215.56/x
  3. Step 3: Cross multiply
    4,913.33x = 7,369.90 × 1,215.56
  4. Step 4: Simplify right side
    4,913.33x = 8,958,536.41
  5. Step 5: Solve for x
    x = 8,958,536.41/4,913.33
  6. Step 6: Final answer
    x = 1,823.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.