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Finding the Fourth Proportional to 7,690.39, 11,535.59 and 5,503.39

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Solution

The fourth proportional to 7,690.39, 11,535.59 and 5,503.39 is: 8,255.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.39 : 11,535.59 = 5,503.39 : x
  2. Step 2: Convert to fraction form
    7,690.39/11,535.59 = 5,503.39/x
  3. Step 3: Cross multiply
    7,690.39x = 11,535.59 × 5,503.39
  4. Step 4: Simplify right side
    7,690.39x = 63,484,850.65
  5. Step 5: Solve for x
    x = 63,484,850.65/7,690.39
  6. Step 6: Final answer
    x = 8,255.09

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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.