Home / 3,021.60-4,533.12-1,378.64

Finding the Fourth Proportional to 3,021.60, 4,533.12 and 1,378.64

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Solution

The fourth proportional to 3,021.60, 4,533.12 and 1,378.64 is: 2,068.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.60 : 4,533.12 = 1,378.64 : x
  2. Step 2: Convert to fraction form
    3,021.60/4,533.12 = 1,378.64/x
  3. Step 3: Cross multiply
    3,021.60x = 4,533.12 × 1,378.64
  4. Step 4: Simplify right side
    3,021.60x = 6,249,540.56
  5. Step 5: Solve for x
    x = 6,249,540.56/3,021.60
  6. Step 6: Final answer
    x = 2,068.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.