Home / 4,287.20-6,430.26-1,821.56

Finding the Fourth Proportional to 4,287.20, 6,430.26 and 1,821.56

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Solution

The fourth proportional to 4,287.20, 6,430.26 and 1,821.56 is: 2,732.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.20 : 6,430.26 = 1,821.56 : x
  2. Step 2: Convert to fraction form
    4,287.20/6,430.26 = 1,821.56/x
  3. Step 3: Cross multiply
    4,287.20x = 6,430.26 × 1,821.56
  4. Step 4: Simplify right side
    4,287.20x = 11,713,104.41
  5. Step 5: Solve for x
    x = 11,713,104.41/4,287.20
  6. Step 6: Final answer
    x = 2,732.11

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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.