Home / 4,143.90-6,219.50-1,678.67

Finding the Fourth Proportional to 4,143.90, 6,219.50 and 1,678.67

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Solution

The fourth proportional to 4,143.90, 6,219.50 and 1,678.67 is: 2,519.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,143.90 : 6,219.50 = 1,678.67 : x
  2. Step 2: Convert to fraction form
    4,143.90/6,219.50 = 1,678.67/x
  3. Step 3: Cross multiply
    4,143.90x = 6,219.50 × 1,678.67
  4. Step 4: Simplify right side
    4,143.90x = 10,440,448.57
  5. Step 5: Solve for x
    x = 10,440,448.57/4,143.90
  6. Step 6: Final answer
    x = 2,519.47

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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.