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Finding the Fourth Proportional to 7,683.44, 11,515.10 and 7,490.25

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Solution

The fourth proportional to 7,683.44, 11,515.10 and 7,490.25 is: 11,225.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,683.44 : 11,515.10 = 7,490.25 : x
  2. Step 2: Convert to fraction form
    7,683.44/11,515.10 = 7,490.25/x
  3. Step 3: Cross multiply
    7,683.44x = 11,515.10 × 7,490.25
  4. Step 4: Simplify right side
    7,683.44x = 86,250,940.32
  5. Step 5: Solve for x
    x = 86,250,940.32/7,683.44
  6. Step 6: Final answer
    x = 11,225.57

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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.