Home / 3,036.20-4,189.98-1,988.25

Finding the Fourth Proportional to 3,036.20, 4,189.98 and 1,988.25

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Solution

The fourth proportional to 3,036.20, 4,189.98 and 1,988.25 is: 2,743.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,036.20 : 4,189.98 = 1,988.25 : x
  2. Step 2: Convert to fraction form
    3,036.20/4,189.98 = 1,988.25/x
  3. Step 3: Cross multiply
    3,036.20x = 4,189.98 × 1,988.25
  4. Step 4: Simplify right side
    3,036.20x = 8,330,727.74
  5. Step 5: Solve for x
    x = 8,330,727.74/3,036.20
  6. Step 6: Final answer
    x = 2,743.81

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Double scale
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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.