Home / 4,989.87-7,486.97-2,678.67

Finding the Fourth Proportional to 4,989.87, 7,486.97 and 2,678.67

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Solution

The fourth proportional to 4,989.87, 7,486.97 and 2,678.67 is: 4,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.87 : 7,486.97 = 2,678.67 : x
  2. Step 2: Convert to fraction form
    4,989.87/7,486.97 = 2,678.67/x
  3. Step 3: Cross multiply
    4,989.87x = 7,486.97 × 2,678.67
  4. Step 4: Simplify right side
    4,989.87x = 20,055,108.54
  5. Step 5: Solve for x
    x = 20,055,108.54/4,989.87
  6. Step 6: Final answer
    x = 4,019.16

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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.