Home / 3,487.68-5,228.79-1,146.21

Finding the Fourth Proportional to 3,487.68, 5,228.79 and 1,146.21

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Solution

The fourth proportional to 3,487.68, 5,228.79 and 1,146.21 is: 1,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.68 : 5,228.79 = 1,146.21 : x
  2. Step 2: Convert to fraction form
    3,487.68/5,228.79 = 1,146.21/x
  3. Step 3: Cross multiply
    3,487.68x = 5,228.79 × 1,146.21
  4. Step 4: Simplify right side
    3,487.68x = 5,993,291.39
  5. Step 5: Solve for x
    x = 5,993,291.39/3,487.68
  6. Step 6: Final answer
    x = 1,718.42

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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.