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Finding the Fourth Proportional to 3,326.83, 4,989.39 and 986.29

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Solution

The fourth proportional to 3,326.83, 4,989.39 and 986.29 is: 1,479.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.83 : 4,989.39 = 986.29 : x
  2. Step 2: Convert to fraction form
    3,326.83/4,989.39 = 986.29/x
  3. Step 3: Cross multiply
    3,326.83x = 4,989.39 × 986.29
  4. Step 4: Simplify right side
    3,326.83x = 4,920,971.09
  5. Step 5: Solve for x
    x = 4,920,971.09/3,326.83
  6. Step 6: Final answer
    x = 1,479.18

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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.