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Finding the Fourth Proportional to 2,689.04, 4,032.84 and 741.35

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Solution

The fourth proportional to 2,689.04, 4,032.84 and 741.35 is: 1,111.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.04 : 4,032.84 = 741.35 : x
  2. Step 2: Convert to fraction form
    2,689.04/4,032.84 = 741.35/x
  3. Step 3: Cross multiply
    2,689.04x = 4,032.84 × 741.35
  4. Step 4: Simplify right side
    2,689.04x = 2,989,745.93
  5. Step 5: Solve for x
    x = 2,989,745.93/2,689.04
  6. Step 6: Final answer
    x = 1,111.83

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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.