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Finding the Fourth Proportional to 7,223.03, 9,967.79 and 3,911.03

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Solution

The fourth proportional to 7,223.03, 9,967.79 and 3,911.03 is: 5,397.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223.03 : 9,967.79 = 3,911.03 : x
  2. Step 2: Convert to fraction form
    7,223.03/9,967.79 = 3,911.03/x
  3. Step 3: Cross multiply
    7,223.03x = 9,967.79 × 3,911.03
  4. Step 4: Simplify right side
    7,223.03x = 38,984,325.72
  5. Step 5: Solve for x
    x = 38,984,325.72/7,223.03
  6. Step 6: Final answer
    x = 5,397.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.