Home / 9,739.87-13,440.68-6,156.78

Finding the Fourth Proportional to 9,739.87, 13,440.68 and 6,156.78

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Solution

The fourth proportional to 9,739.87, 13,440.68 and 6,156.78 is: 8,496.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,739.87 : 13,440.68 = 6,156.78 : x
  2. Step 2: Convert to fraction form
    9,739.87/13,440.68 = 6,156.78/x
  3. Step 3: Cross multiply
    9,739.87x = 13,440.68 × 6,156.78
  4. Step 4: Simplify right side
    9,739.87x = 82,751,251.71
  5. Step 5: Solve for x
    x = 82,751,251.71/9,739.87
  6. Step 6: Final answer
    x = 8,496.14

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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.