Home / 3,085.90-4,257.54-1,889.64

Finding the Fourth Proportional to 3,085.90, 4,257.54 and 1,889.64

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Solution

The fourth proportional to 3,085.90, 4,257.54 and 1,889.64 is: 2,607.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.90 : 4,257.54 = 1,889.64 : x
  2. Step 2: Convert to fraction form
    3,085.90/4,257.54 = 1,889.64/x
  3. Step 3: Cross multiply
    3,085.90x = 4,257.54 × 1,889.64
  4. Step 4: Simplify right side
    3,085.90x = 8,045,217.89
  5. Step 5: Solve for x
    x = 8,045,217.89/3,085.90
  6. Step 6: Final answer
    x = 2,607.09

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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.