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Finding the Fourth Proportional to 7,220.25, 10,830.42 and 2,603.25

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Solution

The fourth proportional to 7,220.25, 10,830.42 and 2,603.25 is: 3,904.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.25 : 10,830.42 = 2,603.25 : x
  2. Step 2: Convert to fraction form
    7,220.25/10,830.42 = 2,603.25/x
  3. Step 3: Cross multiply
    7,220.25x = 10,830.42 × 2,603.25
  4. Step 4: Simplify right side
    7,220.25x = 28,194,290.87
  5. Step 5: Solve for x
    x = 28,194,290.87/7,220.25
  6. Step 6: Final answer
    x = 3,904.89

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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.