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Finding the Fourth Proportional to 7,789.58, 11,636.12 and 7,008.32

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Solution

The fourth proportional to 7,789.58, 11,636.12 and 7,008.32 is: 10,469.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.58 : 11,636.12 = 7,008.32 : x
  2. Step 2: Convert to fraction form
    7,789.58/11,636.12 = 7,008.32/x
  3. Step 3: Cross multiply
    7,789.58x = 11,636.12 × 7,008.32
  4. Step 4: Simplify right side
    7,789.58x = 81,549,652.52
  5. Step 5: Solve for x
    x = 81,549,652.52/7,789.58
  6. Step 6: Final answer
    x = 10,469.07

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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.