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Finding the Fourth Proportional to 3,774.70, 5,690.99 and 3,520.60

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Solution

The fourth proportional to 3,774.70, 5,690.99 and 3,520.60 is: 5,307.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774.70 : 5,690.99 = 3,520.60 : x
  2. Step 2: Convert to fraction form
    3,774.70/5,690.99 = 3,520.60/x
  3. Step 3: Cross multiply
    3,774.70x = 5,690.99 × 3,520.60
  4. Step 4: Simplify right side
    3,774.70x = 20,035,699.39
  5. Step 5: Solve for x
    x = 20,035,699.39/3,774.70
  6. Step 6: Final answer
    x = 5,307.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.