Home / 8,140.68-12,211.83-3,758.58

Finding the Fourth Proportional to 8,140.68, 12,211.83 and 3,758.58

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Solution

The fourth proportional to 8,140.68, 12,211.83 and 3,758.58 is: 5,638.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.68 : 12,211.83 = 3,758.58 : x
  2. Step 2: Convert to fraction form
    8,140.68/12,211.83 = 3,758.58/x
  3. Step 3: Cross multiply
    8,140.68x = 12,211.83 × 3,758.58
  4. Step 4: Simplify right side
    8,140.68x = 45,899,140.00
  5. Step 5: Solve for x
    x = 45,899,140.00/8,140.68
  6. Step 6: Final answer
    x = 5,638.24

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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.