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Finding the Fourth Proportional to 8,705.16, 11,939.13 and 8,348.04

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Solution

The fourth proportional to 8,705.16, 11,939.13 and 8,348.04 is: 11,449.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.16 : 11,939.13 = 8,348.04 : x
  2. Step 2: Convert to fraction form
    8,705.16/11,939.13 = 8,348.04/x
  3. Step 3: Cross multiply
    8,705.16x = 11,939.13 × 8,348.04
  4. Step 4: Simplify right side
    8,705.16x = 99,668,334.81
  5. Step 5: Solve for x
    x = 99,668,334.81/8,705.16
  6. Step 6: Final answer
    x = 11,449.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.