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Finding the Fourth Proportional to 7,709.67, 11,496.83 and 7,639.52

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Solution

The fourth proportional to 7,709.67, 11,496.83 and 7,639.52 is: 11,392.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.67 : 11,496.83 = 7,639.52 : x
  2. Step 2: Convert to fraction form
    7,709.67/11,496.83 = 7,639.52/x
  3. Step 3: Cross multiply
    7,709.67x = 11,496.83 × 7,639.52
  4. Step 4: Simplify right side
    7,709.67x = 87,830,167.04
  5. Step 5: Solve for x
    x = 87,830,167.04/7,709.67
  6. Step 6: Final answer
    x = 11,392.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.