Home / 3,812.10-5,718.15-3,408.90

Finding the Fourth Proportional to 3,812.10, 5,718.15 and 3,408.90

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Solution

The fourth proportional to 3,812.10, 5,718.15 and 3,408.90 is: 5,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.10 : 5,718.15 = 3,408.90 : x
  2. Step 2: Convert to fraction form
    3,812.10/5,718.15 = 3,408.90/x
  3. Step 3: Cross multiply
    3,812.10x = 5,718.15 × 3,408.90
  4. Step 4: Simplify right side
    3,812.10x = 19,492,601.54
  5. Step 5: Solve for x
    x = 19,492,601.54/3,812.10
  6. Step 6: Final answer
    x = 5,113.35

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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.