Home / 6,812.76-10,219.58-1,815.05

Finding the Fourth Proportional to 6,812.76, 10,219.58 and 1,815.05

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Solution

The fourth proportional to 6,812.76, 10,219.58 and 1,815.05 is: 2,722.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,812.76 : 10,219.58 = 1,815.05 : x
  2. Step 2: Convert to fraction form
    6,812.76/10,219.58 = 1,815.05/x
  3. Step 3: Cross multiply
    6,812.76x = 10,219.58 × 1,815.05
  4. Step 4: Simplify right side
    6,812.76x = 18,549,065.15
  5. Step 5: Solve for x
    x = 18,549,065.15/6,812.76
  6. Step 6: Final answer
    x = 2,722.69

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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.