Home / 8,210.10-12,311.55-3,278.10

Finding the Fourth Proportional to 8,210.10, 12,311.55 and 3,278.10

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Solution

The fourth proportional to 8,210.10, 12,311.55 and 3,278.10 is: 4,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.10 : 12,311.55 = 3,278.10 : x
  2. Step 2: Convert to fraction form
    8,210.10/12,311.55 = 3,278.10/x
  3. Step 3: Cross multiply
    8,210.10x = 12,311.55 × 3,278.10
  4. Step 4: Simplify right side
    8,210.10x = 40,358,492.06
  5. Step 5: Solve for x
    x = 40,358,492.06/8,210.10
  6. Step 6: Final answer
    x = 4,915.71

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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.