Home / 3,291.42-4,539.60-2,112.60

Finding the Fourth Proportional to 3,291.42, 4,539.60 and 2,112.60

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Solution

The fourth proportional to 3,291.42, 4,539.60 and 2,112.60 is: 2,913.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.42 : 4,539.60 = 2,112.60 : x
  2. Step 2: Convert to fraction form
    3,291.42/4,539.60 = 2,112.60/x
  3. Step 3: Cross multiply
    3,291.42x = 4,539.60 × 2,112.60
  4. Step 4: Simplify right side
    3,291.42x = 9,590,358.96
  5. Step 5: Solve for x
    x = 9,590,358.96/3,291.42
  6. Step 6: Final answer
    x = 2,913.75

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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.