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Finding the Fourth Proportional to 9,165.20, 13,747.80 and 7,804.40

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Solution

The fourth proportional to 9,165.20, 13,747.80 and 7,804.40 is: 11,706.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.20 : 13,747.80 = 7,804.40 : x
  2. Step 2: Convert to fraction form
    9,165.20/13,747.80 = 7,804.40/x
  3. Step 3: Cross multiply
    9,165.20x = 13,747.80 × 7,804.40
  4. Step 4: Simplify right side
    9,165.20x = 107,293,330.32
  5. Step 5: Solve for x
    x = 107,293,330.32/9,165.20
  6. Step 6: Final answer
    x = 11,706.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.