Home / 4,085.40-6,128.91-1,619.76

Finding the Fourth Proportional to 4,085.40, 6,128.91 and 1,619.76

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Solution

The fourth proportional to 4,085.40, 6,128.91 and 1,619.76 is: 2,429.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.40 : 6,128.91 = 1,619.76 : x
  2. Step 2: Convert to fraction form
    4,085.40/6,128.91 = 1,619.76/x
  3. Step 3: Cross multiply
    4,085.40x = 6,128.91 × 1,619.76
  4. Step 4: Simplify right side
    4,085.40x = 9,927,363.26
  5. Step 5: Solve for x
    x = 9,927,363.26/4,085.40
  6. Step 6: Final answer
    x = 2,429.96

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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.