Home / 1,659.39-2,290.08-1,187.33

Finding the Fourth Proportional to 1,659.39, 2,290.08 and 1,187.33

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Solution

The fourth proportional to 1,659.39, 2,290.08 and 1,187.33 is: 1,638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.39 : 2,290.08 = 1,187.33 : x
  2. Step 2: Convert to fraction form
    1,659.39/2,290.08 = 1,187.33/x
  3. Step 3: Cross multiply
    1,659.39x = 2,290.08 × 1,187.33
  4. Step 4: Simplify right side
    1,659.39x = 2,719,074.75
  5. Step 5: Solve for x
    x = 2,719,074.75/1,659.39
  6. Step 6: Final answer
    x = 1,638.60

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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.