Home / 4,285.70-6,429.45-1,323.90

Finding the Fourth Proportional to 4,285.70, 6,429.45 and 1,323.90

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Solution

The fourth proportional to 4,285.70, 6,429.45 and 1,323.90 is: 1,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.70 : 6,429.45 = 1,323.90 : x
  2. Step 2: Convert to fraction form
    4,285.70/6,429.45 = 1,323.90/x
  3. Step 3: Cross multiply
    4,285.70x = 6,429.45 × 1,323.90
  4. Step 4: Simplify right side
    4,285.70x = 8,511,948.86
  5. Step 5: Solve for x
    x = 8,511,948.86/4,285.70
  6. Step 6: Final answer
    x = 1,986.13

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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.