Home / 5,415.38-8,124.38-1,519.79

Finding the Fourth Proportional to 5,415.38, 8,124.38 and 1,519.79

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Solution

The fourth proportional to 5,415.38, 8,124.38 and 1,519.79 is: 2,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.38 : 8,124.38 = 1,519.79 : x
  2. Step 2: Convert to fraction form
    5,415.38/8,124.38 = 1,519.79/x
  3. Step 3: Cross multiply
    5,415.38x = 8,124.38 × 1,519.79
  4. Step 4: Simplify right side
    5,415.38x = 12,347,314.66
  5. Step 5: Solve for x
    x = 12,347,314.66/5,415.38
  6. Step 6: Final answer
    x = 2,280.05

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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.