Home / 3,390.40-4,668.36-2,968.39

Finding the Fourth Proportional to 3,390.40, 4,668.36 and 2,968.39

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Solution

The fourth proportional to 3,390.40, 4,668.36 and 2,968.39 is: 4,087.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.40 : 4,668.36 = 2,968.39 : x
  2. Step 2: Convert to fraction form
    3,390.40/4,668.36 = 2,968.39/x
  3. Step 3: Cross multiply
    3,390.40x = 4,668.36 × 2,968.39
  4. Step 4: Simplify right side
    3,390.40x = 13,857,513.14
  5. Step 5: Solve for x
    x = 13,857,513.14/3,390.40
  6. Step 6: Final answer
    x = 4,087.28

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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.