Home / 1,662.12-2,290.68-1,101.60

Finding the Fourth Proportional to 1,662.12, 2,290.68 and 1,101.60

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Solution

The fourth proportional to 1,662.12, 2,290.68 and 1,101.60 is: 1,518.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662.12 : 2,290.68 = 1,101.60 : x
  2. Step 2: Convert to fraction form
    1,662.12/2,290.68 = 1,101.60/x
  3. Step 3: Cross multiply
    1,662.12x = 2,290.68 × 1,101.60
  4. Step 4: Simplify right side
    1,662.12x = 2,523,413.09
  5. Step 5: Solve for x
    x = 2,523,413.09/1,662.12
  6. Step 6: Final answer
    x = 1,518.19

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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.