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Finding the Fourth Proportional to 3,670.60, 5,505.90 and 3,491.40

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Solution

The fourth proportional to 3,670.60, 5,505.90 and 3,491.40 is: 5,237.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.60 : 5,505.90 = 3,491.40 : x
  2. Step 2: Convert to fraction form
    3,670.60/5,505.90 = 3,491.40/x
  3. Step 3: Cross multiply
    3,670.60x = 5,505.90 × 3,491.40
  4. Step 4: Simplify right side
    3,670.60x = 19,223,299.26
  5. Step 5: Solve for x
    x = 19,223,299.26/3,670.60
  6. Step 6: Final answer
    x = 5,237.10

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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.