Home / 3,280.32-4,922.40-2,635.20

Finding the Fourth Proportional to 3,280.32, 4,922.40 and 2,635.20

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Solution

The fourth proportional to 3,280.32, 4,922.40 and 2,635.20 is: 3,954.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.32 : 4,922.40 = 2,635.20 : x
  2. Step 2: Convert to fraction form
    3,280.32/4,922.40 = 2,635.20/x
  3. Step 3: Cross multiply
    3,280.32x = 4,922.40 × 2,635.20
  4. Step 4: Simplify right side
    3,280.32x = 12,971,508.48
  5. Step 5: Solve for x
    x = 12,971,508.48/3,280.32
  6. Step 6: Final answer
    x = 3,954.34

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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.