Home / 3,085.85-4,257.80-1,826.28

Finding the Fourth Proportional to 3,085.85, 4,257.80 and 1,826.28

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Solution

The fourth proportional to 3,085.85, 4,257.80 and 1,826.28 is: 2,519.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.85 : 4,257.80 = 1,826.28 : x
  2. Step 2: Convert to fraction form
    3,085.85/4,257.80 = 1,826.28/x
  3. Step 3: Cross multiply
    3,085.85x = 4,257.80 × 1,826.28
  4. Step 4: Simplify right side
    3,085.85x = 7,775,915.21
  5. Step 5: Solve for x
    x = 7,775,915.21/3,085.85
  6. Step 6: Final answer
    x = 2,519.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.