Home / 3,378.20-5,068.10-1,069.70

Finding the Fourth Proportional to 3,378.20, 5,068.10 and 1,069.70

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Solution

The fourth proportional to 3,378.20, 5,068.10 and 1,069.70 is: 1,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.20 : 5,068.10 = 1,069.70 : x
  2. Step 2: Convert to fraction form
    3,378.20/5,068.10 = 1,069.70/x
  3. Step 3: Cross multiply
    3,378.20x = 5,068.10 × 1,069.70
  4. Step 4: Simplify right side
    3,378.20x = 5,421,315.88
  5. Step 5: Solve for x
    x = 5,421,315.88/3,378.20
  6. Step 6: Final answer
    x = 1,604.80

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1.5x scale

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.