Home / 3,826.22-5,280.40-2,880.30

Finding the Fourth Proportional to 3,826.22, 5,280.40 and 2,880.30

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Solution

The fourth proportional to 3,826.22, 5,280.40 and 2,880.30 is: 3,974.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.22 : 5,280.40 = 2,880.30 : x
  2. Step 2: Convert to fraction form
    3,826.22/5,280.40 = 2,880.30/x
  3. Step 3: Cross multiply
    3,826.22x = 5,280.40 × 2,880.30
  4. Step 4: Simplify right side
    3,826.22x = 15,209,136.12
  5. Step 5: Solve for x
    x = 15,209,136.12/3,826.22
  6. Step 6: Final answer
    x = 3,974.98

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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.