Home / 1,861.40-2,569.58-1,198.62

Finding the Fourth Proportional to 1,861.40, 2,569.58 and 1,198.62

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Solution

The fourth proportional to 1,861.40, 2,569.58 and 1,198.62 is: 1,654.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.40 : 2,569.58 = 1,198.62 : x
  2. Step 2: Convert to fraction form
    1,861.40/2,569.58 = 1,198.62/x
  3. Step 3: Cross multiply
    1,861.40x = 2,569.58 × 1,198.62
  4. Step 4: Simplify right side
    1,861.40x = 3,079,949.98
  5. Step 5: Solve for x
    x = 3,079,949.98/1,861.40
  6. Step 6: Final answer
    x = 1,654.64

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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.