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Finding the Fourth Proportional to 7,323.03, 10,985.64 and 2,128.23

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Solution

The fourth proportional to 7,323.03, 10,985.64 and 2,128.23 is: 3,192.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,323.03 : 10,985.64 = 2,128.23 : x
  2. Step 2: Convert to fraction form
    7,323.03/10,985.64 = 2,128.23/x
  3. Step 3: Cross multiply
    7,323.03x = 10,985.64 × 2,128.23
  4. Step 4: Simplify right side
    7,323.03x = 23,379,968.62
  5. Step 5: Solve for x
    x = 23,379,968.62/7,323.03
  6. Step 6: Final answer
    x = 3,192.66

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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.