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Finding the Fourth Proportional to 3,910.42, 5,867.53 and 1,718.87

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Solution

The fourth proportional to 3,910.42, 5,867.53 and 1,718.87 is: 2,579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.42 : 5,867.53 = 1,718.87 : x
  2. Step 2: Convert to fraction form
    3,910.42/5,867.53 = 1,718.87/x
  3. Step 3: Cross multiply
    3,910.42x = 5,867.53 × 1,718.87
  4. Step 4: Simplify right side
    3,910.42x = 10,085,491.95
  5. Step 5: Solve for x
    x = 10,085,491.95/3,910.42
  6. Step 6: Final answer
    x = 2,579.13

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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.