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Finding the Fourth Proportional to 4,751.40, 7,127.95 and 1,630.60

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Solution

The fourth proportional to 4,751.40, 7,127.95 and 1,630.60 is: 2,446.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.40 : 7,127.95 = 1,630.60 : x
  2. Step 2: Convert to fraction form
    4,751.40/7,127.95 = 1,630.60/x
  3. Step 3: Cross multiply
    4,751.40x = 7,127.95 × 1,630.60
  4. Step 4: Simplify right side
    4,751.40x = 11,622,819.49
  5. Step 5: Solve for x
    x = 11,622,819.49/4,751.40
  6. Step 6: Final answer
    x = 2,446.19

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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.