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Finding the Fourth Proportional to 9,091.76, 13,609.53 and 7,763.36

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Solution

The fourth proportional to 9,091.76, 13,609.53 and 7,763.36 is: 11,621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,091.76 : 13,609.53 = 7,763.36 : x
  2. Step 2: Convert to fraction form
    9,091.76/13,609.53 = 7,763.36/x
  3. Step 3: Cross multiply
    9,091.76x = 13,609.53 × 7,763.36
  4. Step 4: Simplify right side
    9,091.76x = 105,655,612.77
  5. Step 5: Solve for x
    x = 105,655,612.77/9,091.76
  6. Step 6: Final answer
    x = 11,621.04

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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.