Home / 2,616.95-3,611.39-1,438.02

Finding the Fourth Proportional to 2,616.95, 3,611.39 and 1,438.02

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Solution

The fourth proportional to 2,616.95, 3,611.39 and 1,438.02 is: 1,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.95 : 3,611.39 = 1,438.02 : x
  2. Step 2: Convert to fraction form
    2,616.95/3,611.39 = 1,438.02/x
  3. Step 3: Cross multiply
    2,616.95x = 3,611.39 × 1,438.02
  4. Step 4: Simplify right side
    2,616.95x = 5,193,251.05
  5. Step 5: Solve for x
    x = 5,193,251.05/2,616.95
  6. Step 6: Final answer
    x = 1,984.47

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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.