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Finding the Fourth Proportional to 4,989.22, 7,475.62 and 3,955.86

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Solution

The fourth proportional to 4,989.22, 7,475.62 and 3,955.86 is: 5,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.22 : 7,475.62 = 3,955.86 : x
  2. Step 2: Convert to fraction form
    4,989.22/7,475.62 = 3,955.86/x
  3. Step 3: Cross multiply
    4,989.22x = 7,475.62 × 3,955.86
  4. Step 4: Simplify right side
    4,989.22x = 29,572,506.13
  5. Step 5: Solve for x
    x = 29,572,506.13/4,989.22
  6. Step 6: Final answer
    x = 5,927.28

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Why These Related Problems?

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