Home / 5,316.45-7,974.34-1,984.05

Finding the Fourth Proportional to 5,316.45, 7,974.34 and 1,984.05

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Solution

The fourth proportional to 5,316.45, 7,974.34 and 1,984.05 is: 2,975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.45 : 7,974.34 = 1,984.05 : x
  2. Step 2: Convert to fraction form
    5,316.45/7,974.34 = 1,984.05/x
  3. Step 3: Cross multiply
    5,316.45x = 7,974.34 × 1,984.05
  4. Step 4: Simplify right side
    5,316.45x = 15,821,489.28
  5. Step 5: Solve for x
    x = 15,821,489.28/5,316.45
  6. Step 6: Final answer
    x = 2,975.95

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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.