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Finding the Fourth Proportional to 3,992.52, 5,984.70 and 1,393.32

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Solution

The fourth proportional to 3,992.52, 5,984.70 and 1,393.32 is: 2,088.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.52 : 5,984.70 = 1,393.32 : x
  2. Step 2: Convert to fraction form
    3,992.52/5,984.70 = 1,393.32/x
  3. Step 3: Cross multiply
    3,992.52x = 5,984.70 × 1,393.32
  4. Step 4: Simplify right side
    3,992.52x = 8,338,602.20
  5. Step 5: Solve for x
    x = 8,338,602.20/3,992.52
  6. Step 6: Final answer
    x = 2,088.56

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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.