Home / 3,069.85-4,231.93-2,124.20

Finding the Fourth Proportional to 3,069.85, 4,231.93 and 2,124.20

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Solution

The fourth proportional to 3,069.85, 4,231.93 and 2,124.20 is: 2,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,069.85 : 4,231.93 = 2,124.20 : x
  2. Step 2: Convert to fraction form
    3,069.85/4,231.93 = 2,124.20/x
  3. Step 3: Cross multiply
    3,069.85x = 4,231.93 × 2,124.20
  4. Step 4: Simplify right side
    3,069.85x = 8,989,433.93
  5. Step 5: Solve for x
    x = 8,989,433.93/3,069.85
  6. Step 6: Final answer
    x = 2,928.30

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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.