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Finding the Fourth Proportional to 3,955.56, 5,931.72 and 1,489.14

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Solution

The fourth proportional to 3,955.56, 5,931.72 and 1,489.14 is: 2,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.56 : 5,931.72 = 1,489.14 : x
  2. Step 2: Convert to fraction form
    3,955.56/5,931.72 = 1,489.14/x
  3. Step 3: Cross multiply
    3,955.56x = 5,931.72 × 1,489.14
  4. Step 4: Simplify right side
    3,955.56x = 8,833,161.52
  5. Step 5: Solve for x
    x = 8,833,161.52/3,955.56
  6. Step 6: Final answer
    x = 2,233.10

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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.