Home / 1,946.64-2,920.50-1,081.56

Finding the Fourth Proportional to 1,946.64, 2,920.50 and 1,081.56

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Solution

The fourth proportional to 1,946.64, 2,920.50 and 1,081.56 is: 1,622.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.64 : 2,920.50 = 1,081.56 : x
  2. Step 2: Convert to fraction form
    1,946.64/2,920.50 = 1,081.56/x
  3. Step 3: Cross multiply
    1,946.64x = 2,920.50 × 1,081.56
  4. Step 4: Simplify right side
    1,946.64x = 3,158,695.98
  5. Step 5: Solve for x
    x = 3,158,695.98/1,946.64
  6. Step 6: Final answer
    x = 1,622.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.