Home / 2,818.24-4,219.80-1,720.40

Finding the Fourth Proportional to 2,818.24, 4,219.80 and 1,720.40

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Solution

The fourth proportional to 2,818.24, 4,219.80 and 1,720.40 is: 2,575.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.24 : 4,219.80 = 1,720.40 : x
  2. Step 2: Convert to fraction form
    2,818.24/4,219.80 = 1,720.40/x
  3. Step 3: Cross multiply
    2,818.24x = 4,219.80 × 1,720.40
  4. Step 4: Simplify right side
    2,818.24x = 7,259,743.92
  5. Step 5: Solve for x
    x = 7,259,743.92/2,818.24
  6. Step 6: Final answer
    x = 2,575.98

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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.