Home / 3,819.42-5,271.02-2,140.75

Finding the Fourth Proportional to 3,819.42, 5,271.02 and 2,140.75

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Solution

The fourth proportional to 3,819.42, 5,271.02 and 2,140.75 is: 2,954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.42 : 5,271.02 = 2,140.75 : x
  2. Step 2: Convert to fraction form
    3,819.42/5,271.02 = 2,140.75/x
  3. Step 3: Cross multiply
    3,819.42x = 5,271.02 × 2,140.75
  4. Step 4: Simplify right side
    3,819.42x = 11,283,928.24
  5. Step 5: Solve for x
    x = 11,283,928.24/3,819.42
  6. Step 6: Final answer
    x = 2,954.36

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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.