Home / 6,172.80-8,518.56-3,378.28

Finding the Fourth Proportional to 6,172.80, 8,518.56 and 3,378.28

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Solution

The fourth proportional to 6,172.80, 8,518.56 and 3,378.28 is: 4,662.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,172.80 : 8,518.56 = 3,378.28 : x
  2. Step 2: Convert to fraction form
    6,172.80/8,518.56 = 3,378.28/x
  3. Step 3: Cross multiply
    6,172.80x = 8,518.56 × 3,378.28
  4. Step 4: Simplify right side
    6,172.80x = 28,778,080.88
  5. Step 5: Solve for x
    x = 28,778,080.88/6,172.80
  6. Step 6: Final answer
    x = 4,662.08

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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.