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Finding the Fourth Proportional to 2,573.47, 3,860.21 and 724.60

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Solution

The fourth proportional to 2,573.47, 3,860.21 and 724.60 is: 1,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,573.47 : 3,860.21 = 724.60 : x
  2. Step 2: Convert to fraction form
    2,573.47/3,860.21 = 724.60/x
  3. Step 3: Cross multiply
    2,573.47x = 3,860.21 × 724.60
  4. Step 4: Simplify right side
    2,573.47x = 2,797,108.17
  5. Step 5: Solve for x
    x = 2,797,108.17/2,573.47
  6. Step 6: Final answer
    x = 1,086.90

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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.