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Finding the Fourth Proportional to 3,147.71, 4,721.58 and 1,503.89

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Solution

The fourth proportional to 3,147.71, 4,721.58 and 1,503.89 is: 2,255.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.71 : 4,721.58 = 1,503.89 : x
  2. Step 2: Convert to fraction form
    3,147.71/4,721.58 = 1,503.89/x
  3. Step 3: Cross multiply
    3,147.71x = 4,721.58 × 1,503.89
  4. Step 4: Simplify right side
    3,147.71x = 7,100,713.34
  5. Step 5: Solve for x
    x = 7,100,713.34/3,147.71
  6. Step 6: Final answer
    x = 2,255.84

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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.