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Finding the Fourth Proportional to 8,659.79, 11,950.43 and 4,680.87

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Solution

The fourth proportional to 8,659.79, 11,950.43 and 4,680.87 is: 6,459.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.79 : 11,950.43 = 4,680.87 : x
  2. Step 2: Convert to fraction form
    8,659.79/11,950.43 = 4,680.87/x
  3. Step 3: Cross multiply
    8,659.79x = 11,950.43 × 4,680.87
  4. Step 4: Simplify right side
    8,659.79x = 55,938,409.27
  5. Step 5: Solve for x
    x = 55,938,409.27/8,659.79
  6. Step 6: Final answer
    x = 6,459.56

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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.