Home / 1,982.52-2,735.34-1,284.60

Finding the Fourth Proportional to 1,982.52, 2,735.34 and 1,284.60

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Solution

The fourth proportional to 1,982.52, 2,735.34 and 1,284.60 is: 1,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.52 : 2,735.34 = 1,284.60 : x
  2. Step 2: Convert to fraction form
    1,982.52/2,735.34 = 1,284.60/x
  3. Step 3: Cross multiply
    1,982.52x = 2,735.34 × 1,284.60
  4. Step 4: Simplify right side
    1,982.52x = 3,513,817.76
  5. Step 5: Solve for x
    x = 3,513,817.76/1,982.52
  6. Step 6: Final answer
    x = 1,772.40

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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.