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Finding the Fourth Proportional to 8,763.04, 12,079.56 and 6,991.84

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Solution

The fourth proportional to 8,763.04, 12,079.56 and 6,991.84 is: 9,638.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.04 : 12,079.56 = 6,991.84 : x
  2. Step 2: Convert to fraction form
    8,763.04/12,079.56 = 6,991.84/x
  3. Step 3: Cross multiply
    8,763.04x = 12,079.56 × 6,991.84
  4. Step 4: Simplify right side
    8,763.04x = 84,458,350.79
  5. Step 5: Solve for x
    x = 84,458,350.79/8,763.04
  6. Step 6: Final answer
    x = 9,638.02

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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.