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Finding the Fourth Proportional to 9,605.76, 13,260.96 and 6,817.92

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Solution

The fourth proportional to 9,605.76, 13,260.96 and 6,817.92 is: 9,412.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,605.76 : 13,260.96 = 6,817.92 : x
  2. Step 2: Convert to fraction form
    9,605.76/13,260.96 = 6,817.92/x
  3. Step 3: Cross multiply
    9,605.76x = 13,260.96 × 6,817.92
  4. Step 4: Simplify right side
    9,605.76x = 90,412,164.40
  5. Step 5: Solve for x
    x = 90,412,164.40/9,605.76
  6. Step 6: Final answer
    x = 9,412.29

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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.