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Finding the Fourth Proportional to 4,990.72, 7,485.44 and 1,527.68

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Solution

The fourth proportional to 4,990.72, 7,485.44 and 1,527.68 is: 2,291.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.72 : 7,485.44 = 1,527.68 : x
  2. Step 2: Convert to fraction form
    4,990.72/7,485.44 = 1,527.68/x
  3. Step 3: Cross multiply
    4,990.72x = 7,485.44 × 1,527.68
  4. Step 4: Simplify right side
    4,990.72x = 11,435,356.98
  5. Step 5: Solve for x
    x = 11,435,356.98/4,990.72
  6. Step 6: Final answer
    x = 2,291.32

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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.