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Finding the Fourth Proportional to 7,636.72, 11,447.16 and 4,342.72

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Solution

The fourth proportional to 7,636.72, 11,447.16 and 4,342.72 is: 6,509.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,636.72 : 11,447.16 = 4,342.72 : x
  2. Step 2: Convert to fraction form
    7,636.72/11,447.16 = 4,342.72/x
  3. Step 3: Cross multiply
    7,636.72x = 11,447.16 × 4,342.72
  4. Step 4: Simplify right side
    7,636.72x = 49,711,810.68
  5. Step 5: Solve for x
    x = 49,711,810.68/7,636.72
  6. Step 6: Final answer
    x = 6,509.58

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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.