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Finding the Fourth Proportional to 3,390.73, 4,679.23 and 1,975.24

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Solution

The fourth proportional to 3,390.73, 4,679.23 and 1,975.24 is: 2,725.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.73 : 4,679.23 = 1,975.24 : x
  2. Step 2: Convert to fraction form
    3,390.73/4,679.23 = 1,975.24/x
  3. Step 3: Cross multiply
    3,390.73x = 4,679.23 × 1,975.24
  4. Step 4: Simplify right side
    3,390.73x = 9,242,592.39
  5. Step 5: Solve for x
    x = 9,242,592.39/3,390.73
  6. Step 6: Final answer
    x = 2,725.84

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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.