Home / 2,742.19-4,113.88-1,280.54

Finding the Fourth Proportional to 2,742.19, 4,113.88 and 1,280.54

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Solution

The fourth proportional to 2,742.19, 4,113.88 and 1,280.54 is: 1,921.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.19 : 4,113.88 = 1,280.54 : x
  2. Step 2: Convert to fraction form
    2,742.19/4,113.88 = 1,280.54/x
  3. Step 3: Cross multiply
    2,742.19x = 4,113.88 × 1,280.54
  4. Step 4: Simplify right side
    2,742.19x = 5,267,994.98
  5. Step 5: Solve for x
    x = 5,267,994.98/2,742.19
  6. Step 6: Final answer
    x = 1,921.09

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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.