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Finding the Fourth Proportional to 7,710.25, 10,640.15 and 4,173.49

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Solution

The fourth proportional to 7,710.25, 10,640.15 and 4,173.49 is: 5,759.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,710.25 : 10,640.15 = 4,173.49 : x
  2. Step 2: Convert to fraction form
    7,710.25/10,640.15 = 4,173.49/x
  3. Step 3: Cross multiply
    7,710.25x = 10,640.15 × 4,173.49
  4. Step 4: Simplify right side
    7,710.25x = 44,406,559.62
  5. Step 5: Solve for x
    x = 44,406,559.62/7,710.25
  6. Step 6: Final answer
    x = 5,759.42

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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.