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Finding the Fourth Proportional to 3,290, 4,911.01 and 2,874.81

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Solution

The fourth proportional to 3,290, 4,911.01 and 2,874.81 is: 4,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290 : 4,911.01 = 2,874.81 : x
  2. Step 2: Convert to fraction form
    3,290/4,911.01 = 2,874.81/x
  3. Step 3: Cross multiply
    3,290x = 4,911.01 × 2,874.81
  4. Step 4: Simplify right side
    3,290x = 14,118,220.66
  5. Step 5: Solve for x
    x = 14,118,220.66/3,290
  6. Step 6: Final answer
    x = 4,291.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.