Home / 3,490.64-4,817.91-1,999.42

Finding the Fourth Proportional to 3,490.64, 4,817.91 and 1,999.42

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Solution

The fourth proportional to 3,490.64, 4,817.91 and 1,999.42 is: 2,759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.64 : 4,817.91 = 1,999.42 : x
  2. Step 2: Convert to fraction form
    3,490.64/4,817.91 = 1,999.42/x
  3. Step 3: Cross multiply
    3,490.64x = 4,817.91 × 1,999.42
  4. Step 4: Simplify right side
    3,490.64x = 9,633,025.61
  5. Step 5: Solve for x
    x = 9,633,025.61/3,490.64
  6. Step 6: Final answer
    x = 2,759.67

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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.