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Finding the Fourth Proportional to 3,086.48, 4,256.98 and 1,890.16

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Solution

The fourth proportional to 3,086.48, 4,256.98 and 1,890.16 is: 2,606.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.48 : 4,256.98 = 1,890.16 : x
  2. Step 2: Convert to fraction form
    3,086.48/4,256.98 = 1,890.16/x
  3. Step 3: Cross multiply
    3,086.48x = 4,256.98 × 1,890.16
  4. Step 4: Simplify right side
    3,086.48x = 8,046,375.24
  5. Step 5: Solve for x
    x = 8,046,375.24/3,086.48
  6. Step 6: Final answer
    x = 2,606.97

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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.