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Finding the Fourth Proportional to 3,990.48, 5,946.09 and 3,554.32

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Solution

The fourth proportional to 3,990.48, 5,946.09 and 3,554.32 is: 5,296.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.48 : 5,946.09 = 3,554.32 : x
  2. Step 2: Convert to fraction form
    3,990.48/5,946.09 = 3,554.32/x
  3. Step 3: Cross multiply
    3,990.48x = 5,946.09 × 3,554.32
  4. Step 4: Simplify right side
    3,990.48x = 21,134,306.61
  5. Step 5: Solve for x
    x = 21,134,306.61/3,990.48
  6. Step 6: Final answer
    x = 5,296.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.