Home / 5,378.57-8,069.39-1,680.85

Finding the Fourth Proportional to 5,378.57, 8,069.39 and 1,680.85

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Solution

The fourth proportional to 5,378.57, 8,069.39 and 1,680.85 is: 2,521.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.57 : 8,069.39 = 1,680.85 : x
  2. Step 2: Convert to fraction form
    5,378.57/8,069.39 = 1,680.85/x
  3. Step 3: Cross multiply
    5,378.57x = 8,069.39 × 1,680.85
  4. Step 4: Simplify right side
    5,378.57x = 13,563,442.17
  5. Step 5: Solve for x
    x = 13,563,442.17/5,378.57
  6. Step 6: Final answer
    x = 2,521.76

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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.