Home / 4,189.90-6,280.48-1,415.62

Finding the Fourth Proportional to 4,189.90, 6,280.48 and 1,415.62

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Solution

The fourth proportional to 4,189.90, 6,280.48 and 1,415.62 is: 2,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.90 : 6,280.48 = 1,415.62 : x
  2. Step 2: Convert to fraction form
    4,189.90/6,280.48 = 1,415.62/x
  3. Step 3: Cross multiply
    4,189.90x = 6,280.48 × 1,415.62
  4. Step 4: Simplify right side
    4,189.90x = 8,890,773.10
  5. Step 5: Solve for x
    x = 8,890,773.10/4,189.90
  6. Step 6: Final answer
    x = 2,121.95

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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.