Home / 4,085.80-6,128-1,586.68

Finding the Fourth Proportional to 4,085.80, 6,128 and 1,586.68

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Solution

The fourth proportional to 4,085.80, 6,128 and 1,586.68 is: 2,379.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.80 : 6,128 = 1,586.68 : x
  2. Step 2: Convert to fraction form
    4,085.80/6,128 = 1,586.68/x
  3. Step 3: Cross multiply
    4,085.80x = 6,128 × 1,586.68
  4. Step 4: Simplify right side
    4,085.80x = 9,723,175.04
  5. Step 5: Solve for x
    x = 9,723,175.04/4,085.80
  6. Step 6: Final answer
    x = 2,379.75

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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.