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Finding the Fourth Proportional to 4,911.70, 7,352.70 and 3,811.18

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Solution

The fourth proportional to 4,911.70, 7,352.70 and 3,811.18 is: 5,705.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.70 : 7,352.70 = 3,811.18 : x
  2. Step 2: Convert to fraction form
    4,911.70/7,352.70 = 3,811.18/x
  3. Step 3: Cross multiply
    4,911.70x = 7,352.70 × 3,811.18
  4. Step 4: Simplify right side
    4,911.70x = 28,022,463.19
  5. Step 5: Solve for x
    x = 28,022,463.19/4,911.70
  6. Step 6: Final answer
    x = 5,705.25

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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.