Home / 3,612.36-4,985-2,040.36

Finding the Fourth Proportional to 3,612.36, 4,985 and 2,040.36

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Solution

The fourth proportional to 3,612.36, 4,985 and 2,040.36 is: 2,815.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.36 : 4,985 = 2,040.36 : x
  2. Step 2: Convert to fraction form
    3,612.36/4,985 = 2,040.36/x
  3. Step 3: Cross multiply
    3,612.36x = 4,985 × 2,040.36
  4. Step 4: Simplify right side
    3,612.36x = 10,171,194.60
  5. Step 5: Solve for x
    x = 10,171,194.60/3,612.36
  6. Step 6: Final answer
    x = 2,815.66

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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.