Home / 4,219.68-6,330.80-2,989.47

Finding the Fourth Proportional to 4,219.68, 6,330.80 and 2,989.47

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Solution

The fourth proportional to 4,219.68, 6,330.80 and 2,989.47 is: 4,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,219.68 : 6,330.80 = 2,989.47 : x
  2. Step 2: Convert to fraction form
    4,219.68/6,330.80 = 2,989.47/x
  3. Step 3: Cross multiply
    4,219.68x = 6,330.80 × 2,989.47
  4. Step 4: Simplify right side
    4,219.68x = 18,925,736.68
  5. Step 5: Solve for x
    x = 18,925,736.68/4,219.68
  6. Step 6: Final answer
    x = 4,485.11

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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.