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Finding the Fourth Proportional to 2,451.72, 3,678.04 and 808.74

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Solution

The fourth proportional to 2,451.72, 3,678.04 and 808.74 is: 1,213.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.72 : 3,678.04 = 808.74 : x
  2. Step 2: Convert to fraction form
    2,451.72/3,678.04 = 808.74/x
  3. Step 3: Cross multiply
    2,451.72x = 3,678.04 × 808.74
  4. Step 4: Simplify right side
    2,451.72x = 2,974,578.07
  5. Step 5: Solve for x
    x = 2,974,578.07/2,451.72
  6. Step 6: Final answer
    x = 1,213.26

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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.