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Finding the Fourth Proportional to 8,659.86, 11,952.41 and 5,670.15

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Solution

The fourth proportional to 8,659.86, 11,952.41 and 5,670.15 is: 7,825.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.86 : 11,952.41 = 5,670.15 : x
  2. Step 2: Convert to fraction form
    8,659.86/11,952.41 = 5,670.15/x
  3. Step 3: Cross multiply
    8,659.86x = 11,952.41 × 5,670.15
  4. Step 4: Simplify right side
    8,659.86x = 67,771,929.21
  5. Step 5: Solve for x
    x = 67,771,929.21/8,659.86
  6. Step 6: Final answer
    x = 7,825.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.