Home / 2,155.10-3,232.65-1,611.10

Finding the Fourth Proportional to 2,155.10, 3,232.65 and 1,611.10

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Solution

The fourth proportional to 2,155.10, 3,232.65 and 1,611.10 is: 2,416.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.10 : 3,232.65 = 1,611.10 : x
  2. Step 2: Convert to fraction form
    2,155.10/3,232.65 = 1,611.10/x
  3. Step 3: Cross multiply
    2,155.10x = 3,232.65 × 1,611.10
  4. Step 4: Simplify right side
    2,155.10x = 5,208,122.42
  5. Step 5: Solve for x
    x = 5,208,122.42/2,155.10
  6. Step 6: Final answer
    x = 2,416.65

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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.