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Finding the Fourth Proportional to 3,157.88, 4,736.52 and 1,307.84

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Solution

The fourth proportional to 3,157.88, 4,736.52 and 1,307.84 is: 1,961.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.88 : 4,736.52 = 1,307.84 : x
  2. Step 2: Convert to fraction form
    3,157.88/4,736.52 = 1,307.84/x
  3. Step 3: Cross multiply
    3,157.88x = 4,736.52 × 1,307.84
  4. Step 4: Simplify right side
    3,157.88x = 6,194,610.32
  5. Step 5: Solve for x
    x = 6,194,610.32/3,157.88
  6. Step 6: Final answer
    x = 1,961.64

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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.