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Finding the Fourth Proportional to 8,769.56, 12,104.88 and 6,980.32

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Solution

The fourth proportional to 8,769.56, 12,104.88 and 6,980.32 is: 9,635.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,769.56 : 12,104.88 = 6,980.32 : x
  2. Step 2: Convert to fraction form
    8,769.56/12,104.88 = 6,980.32/x
  3. Step 3: Cross multiply
    8,769.56x = 12,104.88 × 6,980.32
  4. Step 4: Simplify right side
    8,769.56x = 84,495,951.09
  5. Step 5: Solve for x
    x = 84,495,951.09/8,769.56
  6. Step 6: Final answer
    x = 9,635.14

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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.