Home / 7,724.48-11,487.33-7,478.43

Finding the Fourth Proportional to 7,724.48, 11,487.33 and 7,478.43

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Solution

The fourth proportional to 7,724.48, 11,487.33 and 7,478.43 is: 11,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,724.48 : 11,487.33 = 7,478.43 : x
  2. Step 2: Convert to fraction form
    7,724.48/11,487.33 = 7,478.43/x
  3. Step 3: Cross multiply
    7,724.48x = 11,487.33 × 7,478.43
  4. Step 4: Simplify right side
    7,724.48x = 85,907,193.29
  5. Step 5: Solve for x
    x = 85,907,193.29/7,724.48
  6. Step 6: Final answer
    x = 11,121.43

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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.