Home / 3,199.40-4,415.54-1,802.60

Finding the Fourth Proportional to 3,199.40, 4,415.54 and 1,802.60

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Solution

The fourth proportional to 3,199.40, 4,415.54 and 1,802.60 is: 2,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.40 : 4,415.54 = 1,802.60 : x
  2. Step 2: Convert to fraction form
    3,199.40/4,415.54 = 1,802.60/x
  3. Step 3: Cross multiply
    3,199.40x = 4,415.54 × 1,802.60
  4. Step 4: Simplify right side
    3,199.40x = 7,959,452.40
  5. Step 5: Solve for x
    x = 7,959,452.40/3,199.40
  6. Step 6: Final answer
    x = 2,487.80

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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.