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Finding the Fourth Proportional to 3,451.44, 5,177.96 and 986.29

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Solution

The fourth proportional to 3,451.44, 5,177.96 and 986.29 is: 1,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.44 : 5,177.96 = 986.29 : x
  2. Step 2: Convert to fraction form
    3,451.44/5,177.96 = 986.29/x
  3. Step 3: Cross multiply
    3,451.44x = 5,177.96 × 986.29
  4. Step 4: Simplify right side
    3,451.44x = 5,106,970.17
  5. Step 5: Solve for x
    x = 5,106,970.17/3,451.44
  6. Step 6: Final answer
    x = 1,479.66

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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.