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Finding the Fourth Proportional to 7,636.68, 11,392.92 and 7,538.40

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Solution

The fourth proportional to 7,636.68, 11,392.92 and 7,538.40 is: 11,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,636.68 : 11,392.92 = 7,538.40 : x
  2. Step 2: Convert to fraction form
    7,636.68/11,392.92 = 7,538.40/x
  3. Step 3: Cross multiply
    7,636.68x = 11,392.92 × 7,538.40
  4. Step 4: Simplify right side
    7,636.68x = 85,884,388.13
  5. Step 5: Solve for x
    x = 85,884,388.13/7,636.68
  6. Step 6: Final answer
    x = 11,246.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.