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Finding the Fourth Proportional to 3,151.58, 4,726 and 959.80

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Solution

The fourth proportional to 3,151.58, 4,726 and 959.80 is: 1,439.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.58 : 4,726 = 959.80 : x
  2. Step 2: Convert to fraction form
    3,151.58/4,726 = 959.80/x
  3. Step 3: Cross multiply
    3,151.58x = 4,726 × 959.80
  4. Step 4: Simplify right side
    3,151.58x = 4,536,014.80
  5. Step 5: Solve for x
    x = 4,536,014.80/3,151.58
  6. Step 6: Final answer
    x = 1,439.28

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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.