Home / 4,285.80-6,429.36-1,820.63

Finding the Fourth Proportional to 4,285.80, 6,429.36 and 1,820.63

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Solution

The fourth proportional to 4,285.80, 6,429.36 and 1,820.63 is: 2,731.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.80 : 6,429.36 = 1,820.63 : x
  2. Step 2: Convert to fraction form
    4,285.80/6,429.36 = 1,820.63/x
  3. Step 3: Cross multiply
    4,285.80x = 6,429.36 × 1,820.63
  4. Step 4: Simplify right side
    4,285.80x = 11,705,453.55
  5. Step 5: Solve for x
    x = 11,705,453.55/4,285.80
  6. Step 6: Final answer
    x = 2,731.22

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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.