Home / 1,946.26-2,919.44-485.42

Finding the Fourth Proportional to 1,946.26, 2,919.44 and 485.42

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Solution

The fourth proportional to 1,946.26, 2,919.44 and 485.42 is: 728.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.26 : 2,919.44 = 485.42 : x
  2. Step 2: Convert to fraction form
    1,946.26/2,919.44 = 485.42/x
  3. Step 3: Cross multiply
    1,946.26x = 2,919.44 × 485.42
  4. Step 4: Simplify right side
    1,946.26x = 1,417,152.14
  5. Step 5: Solve for x
    x = 1,417,152.14/1,946.26
  6. Step 6: Final answer
    x = 728.14

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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.