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Finding the Fourth Proportional to 5,774.58, 7,968.92 and 3,121.99

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Solution

The fourth proportional to 5,774.58, 7,968.92 and 3,121.99 is: 4,308.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,774.58 : 7,968.92 = 3,121.99 : x
  2. Step 2: Convert to fraction form
    5,774.58/7,968.92 = 3,121.99/x
  3. Step 3: Cross multiply
    5,774.58x = 7,968.92 × 3,121.99
  4. Step 4: Simplify right side
    5,774.58x = 24,878,886.39
  5. Step 5: Solve for x
    x = 24,878,886.39/5,774.58
  6. Step 6: Final answer
    x = 4,308.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.