Home / 2,720.88-4,079.80-1,856.24

Finding the Fourth Proportional to 2,720.88, 4,079.80 and 1,856.24

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Solution

The fourth proportional to 2,720.88, 4,079.80 and 1,856.24 is: 2,783.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.88 : 4,079.80 = 1,856.24 : x
  2. Step 2: Convert to fraction form
    2,720.88/4,079.80 = 1,856.24/x
  3. Step 3: Cross multiply
    2,720.88x = 4,079.80 × 1,856.24
  4. Step 4: Simplify right side
    2,720.88x = 7,573,087.95
  5. Step 5: Solve for x
    x = 7,573,087.95/2,720.88
  6. Step 6: Final answer
    x = 2,783.32

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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.