Home / 4,020.40-6,030.30-1,679.80

Finding the Fourth Proportional to 4,020.40, 6,030.30 and 1,679.80

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Solution

The fourth proportional to 4,020.40, 6,030.30 and 1,679.80 is: 2,519.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,020.40 : 6,030.30 = 1,679.80 : x
  2. Step 2: Convert to fraction form
    4,020.40/6,030.30 = 1,679.80/x
  3. Step 3: Cross multiply
    4,020.40x = 6,030.30 × 1,679.80
  4. Step 4: Simplify right side
    4,020.40x = 10,129,697.94
  5. Step 5: Solve for x
    x = 10,129,697.94/4,020.40
  6. Step 6: Final answer
    x = 2,519.57

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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.