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Finding the Fourth Proportional to 8,741.19, 12,079.95 and 7,769.19

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Solution

The fourth proportional to 8,741.19, 12,079.95 and 7,769.19 is: 10,736.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,741.19 : 12,079.95 = 7,769.19 : x
  2. Step 2: Convert to fraction form
    8,741.19/12,079.95 = 7,769.19/x
  3. Step 3: Cross multiply
    8,741.19x = 12,079.95 × 7,769.19
  4. Step 4: Simplify right side
    8,741.19x = 93,851,426.74
  5. Step 5: Solve for x
    x = 93,851,426.74/8,741.19
  6. Step 6: Final answer
    x = 10,736.69

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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.