Home / 8,078.20-11,147.37-4,721.95

Finding the Fourth Proportional to 8,078.20, 11,147.37 and 4,721.95

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Solution

The fourth proportional to 8,078.20, 11,147.37 and 4,721.95 is: 6,515.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.20 : 11,147.37 = 4,721.95 : x
  2. Step 2: Convert to fraction form
    8,078.20/11,147.37 = 4,721.95/x
  3. Step 3: Cross multiply
    8,078.20x = 11,147.37 × 4,721.95
  4. Step 4: Simplify right side
    8,078.20x = 52,637,323.77
  5. Step 5: Solve for x
    x = 52,637,323.77/8,078.20
  6. Step 6: Final answer
    x = 6,515.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.