Home / 2,611.13-3,913.17-1,439.40

Finding the Fourth Proportional to 2,611.13, 3,913.17 and 1,439.40

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Solution

The fourth proportional to 2,611.13, 3,913.17 and 1,439.40 is: 2,157.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.13 : 3,913.17 = 1,439.40 : x
  2. Step 2: Convert to fraction form
    2,611.13/3,913.17 = 1,439.40/x
  3. Step 3: Cross multiply
    2,611.13x = 3,913.17 × 1,439.40
  4. Step 4: Simplify right side
    2,611.13x = 5,632,616.90
  5. Step 5: Solve for x
    x = 5,632,616.90/2,611.13
  6. Step 6: Final answer
    x = 2,157.16

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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.