Home / 3,280.40-4,521.90-2,616.20

Finding the Fourth Proportional to 3,280.40, 4,521.90 and 2,616.20

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Solution

The fourth proportional to 3,280.40, 4,521.90 and 2,616.20 is: 3,606.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.40 : 4,521.90 = 2,616.20 : x
  2. Step 2: Convert to fraction form
    3,280.40/4,521.90 = 2,616.20/x
  3. Step 3: Cross multiply
    3,280.40x = 4,521.90 × 2,616.20
  4. Step 4: Simplify right side
    3,280.40x = 11,830,194.78
  5. Step 5: Solve for x
    x = 11,830,194.78/3,280.40
  6. Step 6: Final answer
    x = 3,606.33

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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.