Home / 3,519.28-4,856.11-2,990.31

Finding the Fourth Proportional to 3,519.28, 4,856.11 and 2,990.31

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Solution

The fourth proportional to 3,519.28, 4,856.11 and 2,990.31 is: 4,126.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.28 : 4,856.11 = 2,990.31 : x
  2. Step 2: Convert to fraction form
    3,519.28/4,856.11 = 2,990.31/x
  3. Step 3: Cross multiply
    3,519.28x = 4,856.11 × 2,990.31
  4. Step 4: Simplify right side
    3,519.28x = 14,521,274.29
  5. Step 5: Solve for x
    x = 14,521,274.29/3,519.28
  6. Step 6: Final answer
    x = 4,126.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.