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Finding the Fourth Proportional to 3,387.58, 5,081.38 and 1,047.58

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Solution

The fourth proportional to 3,387.58, 5,081.38 and 1,047.58 is: 1,571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.58 : 5,081.38 = 1,047.58 : x
  2. Step 2: Convert to fraction form
    3,387.58/5,081.38 = 1,047.58/x
  3. Step 3: Cross multiply
    3,387.58x = 5,081.38 × 1,047.58
  4. Step 4: Simplify right side
    3,387.58x = 5,323,152.06
  5. Step 5: Solve for x
    x = 5,323,152.06/3,387.58
  6. Step 6: Final answer
    x = 1,571.37

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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.