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Finding the Fourth Proportional to 9,323.40, 13,985.40 and 3,480.60

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Solution

The fourth proportional to 9,323.40, 13,985.40 and 3,480.60 is: 5,221.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,323.40 : 13,985.40 = 3,480.60 : x
  2. Step 2: Convert to fraction form
    9,323.40/13,985.40 = 3,480.60/x
  3. Step 3: Cross multiply
    9,323.40x = 13,985.40 × 3,480.60
  4. Step 4: Simplify right side
    9,323.40x = 48,677,583.24
  5. Step 5: Solve for x
    x = 48,677,583.24/9,323.40
  6. Step 6: Final answer
    x = 5,221.01

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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.