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Finding the Fourth Proportional to 7,659.60, 11,489.40 and 2,730.48

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Solution

The fourth proportional to 7,659.60, 11,489.40 and 2,730.48 is: 4,095.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.60 : 11,489.40 = 2,730.48 : x
  2. Step 2: Convert to fraction form
    7,659.60/11,489.40 = 2,730.48/x
  3. Step 3: Cross multiply
    7,659.60x = 11,489.40 × 2,730.48
  4. Step 4: Simplify right side
    7,659.60x = 31,371,576.91
  5. Step 5: Solve for x
    x = 31,371,576.91/7,659.60
  6. Step 6: Final answer
    x = 4,095.72

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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.