Home / 2,820.07-4,221.78-1,776.88

Finding the Fourth Proportional to 2,820.07, 4,221.78 and 1,776.88

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Solution

The fourth proportional to 2,820.07, 4,221.78 and 1,776.88 is: 2,660.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.07 : 4,221.78 = 1,776.88 : x
  2. Step 2: Convert to fraction form
    2,820.07/4,221.78 = 1,776.88/x
  3. Step 3: Cross multiply
    2,820.07x = 4,221.78 × 1,776.88
  4. Step 4: Simplify right side
    2,820.07x = 7,501,596.45
  5. Step 5: Solve for x
    x = 7,501,596.45/2,820.07
  6. Step 6: Final answer
    x = 2,660.07

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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.