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Finding the Fourth Proportional to 3,779.09, 5,640.05 and 3,680.67

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Solution

The fourth proportional to 3,779.09, 5,640.05 and 3,680.67 is: 5,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.09 : 5,640.05 = 3,680.67 : x
  2. Step 2: Convert to fraction form
    3,779.09/5,640.05 = 3,680.67/x
  3. Step 3: Cross multiply
    3,779.09x = 5,640.05 × 3,680.67
  4. Step 4: Simplify right side
    3,779.09x = 20,759,158.23
  5. Step 5: Solve for x
    x = 20,759,158.23/3,779.09
  6. Step 6: Final answer
    x = 5,493.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.