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Finding the Fourth Proportional to 7,688.76, 11,525.91 and 7,003.99

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Solution

The fourth proportional to 7,688.76, 11,525.91 and 7,003.99 is: 10,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.76 : 11,525.91 = 7,003.99 : x
  2. Step 2: Convert to fraction form
    7,688.76/11,525.91 = 7,003.99/x
  3. Step 3: Cross multiply
    7,688.76x = 11,525.91 × 7,003.99
  4. Step 4: Simplify right side
    7,688.76x = 80,727,358.38
  5. Step 5: Solve for x
    x = 80,727,358.38/7,688.76
  6. Step 6: Final answer
    x = 10,499.40

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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.