Home / 4,142.61-6,215.94-1,679.20

Finding the Fourth Proportional to 4,142.61, 6,215.94 and 1,679.20

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Solution

The fourth proportional to 4,142.61, 6,215.94 and 1,679.20 is: 2,519.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.61 : 6,215.94 = 1,679.20 : x
  2. Step 2: Convert to fraction form
    4,142.61/6,215.94 = 1,679.20/x
  3. Step 3: Cross multiply
    4,142.61x = 6,215.94 × 1,679.20
  4. Step 4: Simplify right side
    4,142.61x = 10,437,790.91
  5. Step 5: Solve for x
    x = 10,437,790.91/4,142.61
  6. Step 6: Final answer
    x = 2,519.62

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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.