Home / 2,820.86-4,235.40-2,082.75

Finding the Fourth Proportional to 2,820.86, 4,235.40 and 2,082.75

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Solution

The fourth proportional to 2,820.86, 4,235.40 and 2,082.75 is: 3,127.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.86 : 4,235.40 = 2,082.75 : x
  2. Step 2: Convert to fraction form
    2,820.86/4,235.40 = 2,082.75/x
  3. Step 3: Cross multiply
    2,820.86x = 4,235.40 × 2,082.75
  4. Step 4: Simplify right side
    2,820.86x = 8,821,279.35
  5. Step 5: Solve for x
    x = 8,821,279.35/2,820.86
  6. Step 6: Final answer
    x = 3,127.16

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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.