Home / 8,219.26-12,312.49-5,091.85

Finding the Fourth Proportional to 8,219.26, 12,312.49 and 5,091.85

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Solution

The fourth proportional to 8,219.26, 12,312.49 and 5,091.85 is: 7,627.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.26 : 12,312.49 = 5,091.85 : x
  2. Step 2: Convert to fraction form
    8,219.26/12,312.49 = 5,091.85/x
  3. Step 3: Cross multiply
    8,219.26x = 12,312.49 × 5,091.85
  4. Step 4: Simplify right side
    8,219.26x = 62,693,352.21
  5. Step 5: Solve for x
    x = 62,693,352.21/8,219.26
  6. Step 6: Final answer
    x = 7,627.62

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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.