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Finding the Fourth Proportional to 6,078.90, 8,395.80 and 4,085.99

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Solution

The fourth proportional to 6,078.90, 8,395.80 and 4,085.99 is: 5,643.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.90 : 8,395.80 = 4,085.99 : x
  2. Step 2: Convert to fraction form
    6,078.90/8,395.80 = 4,085.99/x
  3. Step 3: Cross multiply
    6,078.90x = 8,395.80 × 4,085.99
  4. Step 4: Simplify right side
    6,078.90x = 34,305,155.40
  5. Step 5: Solve for x
    x = 34,305,155.40/6,078.90
  6. Step 6: Final answer
    x = 5,643.32

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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.