Home / 2,871.12-4,283.34-2,557.44

Finding the Fourth Proportional to 2,871.12, 4,283.34 and 2,557.44

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Solution

The fourth proportional to 2,871.12, 4,283.34 and 2,557.44 is: 3,815.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.12 : 4,283.34 = 2,557.44 : x
  2. Step 2: Convert to fraction form
    2,871.12/4,283.34 = 2,557.44/x
  3. Step 3: Cross multiply
    2,871.12x = 4,283.34 × 2,557.44
  4. Step 4: Simplify right side
    2,871.12x = 10,954,385.05
  5. Step 5: Solve for x
    x = 10,954,385.05/2,871.12
  6. Step 6: Final answer
    x = 3,815.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.