Home / 2,017.84-2,784.60-1,221.22

Finding the Fourth Proportional to 2,017.84, 2,784.60 and 1,221.22

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Solution

The fourth proportional to 2,017.84, 2,784.60 and 1,221.22 is: 1,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,017.84 : 2,784.60 = 1,221.22 : x
  2. Step 2: Convert to fraction form
    2,017.84/2,784.60 = 1,221.22/x
  3. Step 3: Cross multiply
    2,017.84x = 2,784.60 × 1,221.22
  4. Step 4: Simplify right side
    2,017.84x = 3,400,609.21
  5. Step 5: Solve for x
    x = 3,400,609.21/2,017.84
  6. Step 6: Final answer
    x = 1,685.27

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1.5x scale

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.