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Finding the Fourth Proportional to 9,739.76, 13,440.86 and 5,323.76

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Solution

The fourth proportional to 9,739.76, 13,440.86 and 5,323.76 is: 7,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,739.76 : 13,440.86 = 5,323.76 : x
  2. Step 2: Convert to fraction form
    9,739.76/13,440.86 = 5,323.76/x
  3. Step 3: Cross multiply
    9,739.76x = 13,440.86 × 5,323.76
  4. Step 4: Simplify right side
    9,739.76x = 71,555,912.83
  5. Step 5: Solve for x
    x = 71,555,912.83/9,739.76
  6. Step 6: Final answer
    x = 7,346.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.