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Finding the Fourth Proportional to 4,874.28, 6,726 and 2,985

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Solution

The fourth proportional to 4,874.28, 6,726 and 2,985 is: 4,118.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,874.28 : 6,726 = 2,985 : x
  2. Step 2: Convert to fraction form
    4,874.28/6,726 = 2,985/x
  3. Step 3: Cross multiply
    4,874.28x = 6,726 × 2,985
  4. Step 4: Simplify right side
    4,874.28x = 20,077,110
  5. Step 5: Solve for x
    x = 20,077,110/4,874.28
  6. Step 6: Final answer
    x = 4,118.99

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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.