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Finding the Fourth Proportional to 6,393.36, 8,820.58 and 3,739.80

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Solution

The fourth proportional to 6,393.36, 8,820.58 and 3,739.80 is: 5,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,393.36 : 8,820.58 = 3,739.80 : x
  2. Step 2: Convert to fraction form
    6,393.36/8,820.58 = 3,739.80/x
  3. Step 3: Cross multiply
    6,393.36x = 8,820.58 × 3,739.80
  4. Step 4: Simplify right side
    6,393.36x = 32,987,205.08
  5. Step 5: Solve for x
    x = 32,987,205.08/6,393.36
  6. Step 6: Final answer
    x = 5,159.60

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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.