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Finding the Fourth Proportional to 7,987.94, 11,949.79 and 6,903.94

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Solution

The fourth proportional to 7,987.94, 11,949.79 and 6,903.94 is: 10,328.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.94 : 11,949.79 = 6,903.94 : x
  2. Step 2: Convert to fraction form
    7,987.94/11,949.79 = 6,903.94/x
  3. Step 3: Cross multiply
    7,987.94x = 11,949.79 × 6,903.94
  4. Step 4: Simplify right side
    7,987.94x = 82,500,633.17
  5. Step 5: Solve for x
    x = 82,500,633.17/7,987.94
  6. Step 6: Final answer
    x = 10,328.15

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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.