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Finding the Fourth Proportional to 3,049.48, 4,573.81 and 858.39

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Solution

The fourth proportional to 3,049.48, 4,573.81 and 858.39 is: 1,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,049.48 : 4,573.81 = 858.39 : x
  2. Step 2: Convert to fraction form
    3,049.48/4,573.81 = 858.39/x
  3. Step 3: Cross multiply
    3,049.48x = 4,573.81 × 858.39
  4. Step 4: Simplify right side
    3,049.48x = 3,926,112.77
  5. Step 5: Solve for x
    x = 3,926,112.77/3,049.48
  6. Step 6: Final answer
    x = 1,287.47

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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.