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Finding the Fourth Proportional to 8,705.94, 13,047.39 and 4,079.22

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Solution

The fourth proportional to 8,705.94, 13,047.39 and 4,079.22 is: 6,113.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.94 : 13,047.39 = 4,079.22 : x
  2. Step 2: Convert to fraction form
    8,705.94/13,047.39 = 4,079.22/x
  3. Step 3: Cross multiply
    8,705.94x = 13,047.39 × 4,079.22
  4. Step 4: Simplify right side
    8,705.94x = 53,223,174.24
  5. Step 5: Solve for x
    x = 53,223,174.24/8,705.94
  6. Step 6: Final answer
    x = 6,113.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.