Home / 2,938.20-4,054.92-2,741.40

Finding the Fourth Proportional to 2,938.20, 4,054.92 and 2,741.40

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Solution

The fourth proportional to 2,938.20, 4,054.92 and 2,741.40 is: 3,783.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.20 : 4,054.92 = 2,741.40 : x
  2. Step 2: Convert to fraction form
    2,938.20/4,054.92 = 2,741.40/x
  3. Step 3: Cross multiply
    2,938.20x = 4,054.92 × 2,741.40
  4. Step 4: Simplify right side
    2,938.20x = 11,116,157.69
  5. Step 5: Solve for x
    x = 11,116,157.69/2,938.20
  6. Step 6: Final answer
    x = 3,783.32

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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.