Home / 2,861.90-3,949.31-1,602.94

Finding the Fourth Proportional to 2,861.90, 3,949.31 and 1,602.94

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Solution

The fourth proportional to 2,861.90, 3,949.31 and 1,602.94 is: 2,211.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.90 : 3,949.31 = 1,602.94 : x
  2. Step 2: Convert to fraction form
    2,861.90/3,949.31 = 1,602.94/x
  3. Step 3: Cross multiply
    2,861.90x = 3,949.31 × 1,602.94
  4. Step 4: Simplify right side
    2,861.90x = 6,330,479.21
  5. Step 5: Solve for x
    x = 6,330,479.21/2,861.90
  6. Step 6: Final answer
    x = 2,211.98

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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.