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Finding the Fourth Proportional to 7,931.04, 11,889.20 and 2,735.68

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Solution

The fourth proportional to 7,931.04, 11,889.20 and 2,735.68 is: 4,100.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.04 : 11,889.20 = 2,735.68 : x
  2. Step 2: Convert to fraction form
    7,931.04/11,889.20 = 2,735.68/x
  3. Step 3: Cross multiply
    7,931.04x = 11,889.20 × 2,735.68
  4. Step 4: Simplify right side
    7,931.04x = 32,525,046.66
  5. Step 5: Solve for x
    x = 32,525,046.66/7,931.04
  6. Step 6: Final answer
    x = 4,100.98

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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.