Home / 3,378.96-4,662.36-2,912.40

Finding the Fourth Proportional to 3,378.96, 4,662.36 and 2,912.40

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Solution

The fourth proportional to 3,378.96, 4,662.36 and 2,912.40 is: 4,018.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.96 : 4,662.36 = 2,912.40 : x
  2. Step 2: Convert to fraction form
    3,378.96/4,662.36 = 2,912.40/x
  3. Step 3: Cross multiply
    3,378.96x = 4,662.36 × 2,912.40
  4. Step 4: Simplify right side
    3,378.96x = 13,578,657.26
  5. Step 5: Solve for x
    x = 13,578,657.26/3,378.96
  6. Step 6: Final answer
    x = 4,018.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.