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Finding the Fourth Proportional to 9,751.40, 14,630.70 and 3,912.20

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Solution

The fourth proportional to 9,751.40, 14,630.70 and 3,912.20 is: 5,869.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,751.40 : 14,630.70 = 3,912.20 : x
  2. Step 2: Convert to fraction form
    9,751.40/14,630.70 = 3,912.20/x
  3. Step 3: Cross multiply
    9,751.40x = 14,630.70 × 3,912.20
  4. Step 4: Simplify right side
    9,751.40x = 57,238,224.54
  5. Step 5: Solve for x
    x = 57,238,224.54/9,751.40
  6. Step 6: Final answer
    x = 5,869.74

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1.5x scale

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.