Home / 3,540.90-4,886.80-1,969.50

Finding the Fourth Proportional to 3,540.90, 4,886.80 and 1,969.50

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Solution

The fourth proportional to 3,540.90, 4,886.80 and 1,969.50 is: 2,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.90 : 4,886.80 = 1,969.50 : x
  2. Step 2: Convert to fraction form
    3,540.90/4,886.80 = 1,969.50/x
  3. Step 3: Cross multiply
    3,540.90x = 4,886.80 × 1,969.50
  4. Step 4: Simplify right side
    3,540.90x = 9,624,552.60
  5. Step 5: Solve for x
    x = 9,624,552.60/3,540.90
  6. Step 6: Final answer
    x = 2,718.11

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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.