Home / 6,078.24-9,115.20-1,917

Finding the Fourth Proportional to 6,078.24, 9,115.20 and 1,917

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Solution

The fourth proportional to 6,078.24, 9,115.20 and 1,917 is: 2,874.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.24 : 9,115.20 = 1,917 : x
  2. Step 2: Convert to fraction form
    6,078.24/9,115.20 = 1,917/x
  3. Step 3: Cross multiply
    6,078.24x = 9,115.20 × 1,917
  4. Step 4: Simplify right side
    6,078.24x = 17,473,838.40
  5. Step 5: Solve for x
    x = 17,473,838.40/6,078.24
  6. Step 6: Final answer
    x = 2,874.82

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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.