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Finding the Fourth Proportional to 3,071.94, 4,607.92 and 763.44

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Solution

The fourth proportional to 3,071.94, 4,607.92 and 763.44 is: 1,145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.94 : 4,607.92 = 763.44 : x
  2. Step 2: Convert to fraction form
    3,071.94/4,607.92 = 763.44/x
  3. Step 3: Cross multiply
    3,071.94x = 4,607.92 × 763.44
  4. Step 4: Simplify right side
    3,071.94x = 3,517,870.44
  5. Step 5: Solve for x
    x = 3,517,870.44/3,071.94
  6. Step 6: Final answer
    x = 1,145.16

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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.