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Finding the Fourth Proportional to 8,659.18, 11,947.02 and 5,298.43

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Solution

The fourth proportional to 8,659.18, 11,947.02 and 5,298.43 is: 7,310.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.18 : 11,947.02 = 5,298.43 : x
  2. Step 2: Convert to fraction form
    8,659.18/11,947.02 = 5,298.43/x
  3. Step 3: Cross multiply
    8,659.18x = 11,947.02 × 5,298.43
  4. Step 4: Simplify right side
    8,659.18x = 63,300,449.18
  5. Step 5: Solve for x
    x = 63,300,449.18/8,659.18
  6. Step 6: Final answer
    x = 7,310.21

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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.