Home / 4,905.40-7,352.70-2,131.60

Finding the Fourth Proportional to 4,905.40, 7,352.70 and 2,131.60

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Solution

The fourth proportional to 4,905.40, 7,352.70 and 2,131.60 is: 3,195.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.40 : 7,352.70 = 2,131.60 : x
  2. Step 2: Convert to fraction form
    4,905.40/7,352.70 = 2,131.60/x
  3. Step 3: Cross multiply
    4,905.40x = 7,352.70 × 2,131.60
  4. Step 4: Simplify right side
    4,905.40x = 15,673,015.32
  5. Step 5: Solve for x
    x = 15,673,015.32/4,905.40
  6. Step 6: Final answer
    x = 3,195.05

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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.