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Finding the Fourth Proportional to 3,104.84, 4,657.70 and 913.72

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Solution

The fourth proportional to 3,104.84, 4,657.70 and 913.72 is: 1,370.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,104.84 : 4,657.70 = 913.72 : x
  2. Step 2: Convert to fraction form
    3,104.84/4,657.70 = 913.72/x
  3. Step 3: Cross multiply
    3,104.84x = 4,657.70 × 913.72
  4. Step 4: Simplify right side
    3,104.84x = 4,255,833.64
  5. Step 5: Solve for x
    x = 4,255,833.64/3,104.84
  6. Step 6: Final answer
    x = 1,370.71

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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.