Home / 1,946.44-2,919.63-485.59

Finding the Fourth Proportional to 1,946.44, 2,919.63 and 485.59

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Solution

The fourth proportional to 1,946.44, 2,919.63 and 485.59 is: 728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.44 : 2,919.63 = 485.59 : x
  2. Step 2: Convert to fraction form
    1,946.44/2,919.63 = 485.59/x
  3. Step 3: Cross multiply
    1,946.44x = 2,919.63 × 485.59
  4. Step 4: Simplify right side
    1,946.44x = 1,417,743.13
  5. Step 5: Solve for x
    x = 1,417,743.13/1,946.44
  6. Step 6: Final answer
    x = 728.38

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1.5x scale

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.