Home / 2,164.06-2,986.66-1,220.02

Finding the Fourth Proportional to 2,164.06, 2,986.66 and 1,220.02

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Solution

The fourth proportional to 2,164.06, 2,986.66 and 1,220.02 is: 1,683.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.06 : 2,986.66 = 1,220.02 : x
  2. Step 2: Convert to fraction form
    2,164.06/2,986.66 = 1,220.02/x
  3. Step 3: Cross multiply
    2,164.06x = 2,986.66 × 1,220.02
  4. Step 4: Simplify right side
    2,164.06x = 3,643,784.93
  5. Step 5: Solve for x
    x = 3,643,784.93/2,164.06
  6. Step 6: Final answer
    x = 1,683.77

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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.