Home / 3,021.45-4,171.40-1,903.35

Finding the Fourth Proportional to 3,021.45, 4,171.40 and 1,903.35

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Solution

The fourth proportional to 3,021.45, 4,171.40 and 1,903.35 is: 2,627.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.45 : 4,171.40 = 1,903.35 : x
  2. Step 2: Convert to fraction form
    3,021.45/4,171.40 = 1,903.35/x
  3. Step 3: Cross multiply
    3,021.45x = 4,171.40 × 1,903.35
  4. Step 4: Simplify right side
    3,021.45x = 7,939,623.99
  5. Step 5: Solve for x
    x = 7,939,623.99/3,021.45
  6. Step 6: Final answer
    x = 2,627.75

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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.