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Finding the Fourth Proportional to 7,874.72, 11,812.08 and 2,031.33

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Solution

The fourth proportional to 7,874.72, 11,812.08 and 2,031.33 is: 3,046.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.72 : 11,812.08 = 2,031.33 : x
  2. Step 2: Convert to fraction form
    7,874.72/11,812.08 = 2,031.33/x
  3. Step 3: Cross multiply
    7,874.72x = 11,812.08 × 2,031.33
  4. Step 4: Simplify right side
    7,874.72x = 23,994,206.51
  5. Step 5: Solve for x
    x = 23,994,206.51/7,874.72
  6. Step 6: Final answer
    x = 3,046.99

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1.5x scale

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.