Home / 2,816.32-4,225.60-1,891.20

Finding the Fourth Proportional to 2,816.32, 4,225.60 and 1,891.20

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Solution

The fourth proportional to 2,816.32, 4,225.60 and 1,891.20 is: 2,837.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.32 : 4,225.60 = 1,891.20 : x
  2. Step 2: Convert to fraction form
    2,816.32/4,225.60 = 1,891.20/x
  3. Step 3: Cross multiply
    2,816.32x = 4,225.60 × 1,891.20
  4. Step 4: Simplify right side
    2,816.32x = 7,991,454.72
  5. Step 5: Solve for x
    x = 7,991,454.72/2,816.32
  6. Step 6: Final answer
    x = 2,837.55

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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.