Home / 3,085.05-4,254.58-2,638.60

Finding the Fourth Proportional to 3,085.05, 4,254.58 and 2,638.60

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Solution

The fourth proportional to 3,085.05, 4,254.58 and 2,638.60 is: 3,638.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.05 : 4,254.58 = 2,638.60 : x
  2. Step 2: Convert to fraction form
    3,085.05/4,254.58 = 2,638.60/x
  3. Step 3: Cross multiply
    3,085.05x = 4,254.58 × 2,638.60
  4. Step 4: Simplify right side
    3,085.05x = 11,226,134.79
  5. Step 5: Solve for x
    x = 11,226,134.79/3,085.05
  6. Step 6: Final answer
    x = 3,638.88

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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.