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Finding the Fourth Proportional to 2,491.43, 3,736.74 and 847.94

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Solution

The fourth proportional to 2,491.43, 3,736.74 and 847.94 is: 1,271.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.43 : 3,736.74 = 847.94 : x
  2. Step 2: Convert to fraction form
    2,491.43/3,736.74 = 847.94/x
  3. Step 3: Cross multiply
    2,491.43x = 3,736.74 × 847.94
  4. Step 4: Simplify right side
    2,491.43x = 3,168,531.32
  5. Step 5: Solve for x
    x = 3,168,531.32/2,491.43
  6. Step 6: Final answer
    x = 1,271.77

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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.