Home / 3,968.37-5,478.93-2,478.36

Finding the Fourth Proportional to 3,968.37, 5,478.93 and 2,478.36

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Solution

The fourth proportional to 3,968.37, 5,478.93 and 2,478.36 is: 3,421.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.37 : 5,478.93 = 2,478.36 : x
  2. Step 2: Convert to fraction form
    3,968.37/5,478.93 = 2,478.36/x
  3. Step 3: Cross multiply
    3,968.37x = 5,478.93 × 2,478.36
  4. Step 4: Simplify right side
    3,968.37x = 13,578,760.95
  5. Step 5: Solve for x
    x = 13,578,760.95/3,968.37
  6. Step 6: Final answer
    x = 3,421.75

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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.