Home / 1,946.36-2,685.78-1,200.20

Finding the Fourth Proportional to 1,946.36, 2,685.78 and 1,200.20

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Solution

The fourth proportional to 1,946.36, 2,685.78 and 1,200.20 is: 1,656.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.36 : 2,685.78 = 1,200.20 : x
  2. Step 2: Convert to fraction form
    1,946.36/2,685.78 = 1,200.20/x
  3. Step 3: Cross multiply
    1,946.36x = 2,685.78 × 1,200.20
  4. Step 4: Simplify right side
    1,946.36x = 3,223,473.16
  5. Step 5: Solve for x
    x = 3,223,473.16/1,946.36
  6. Step 6: Final answer
    x = 1,656.15

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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.