Home / 5,108.50-7,049.73-3,118.74

Finding the Fourth Proportional to 5,108.50, 7,049.73 and 3,118.74

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Solution

The fourth proportional to 5,108.50, 7,049.73 and 3,118.74 is: 4,303.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.50 : 7,049.73 = 3,118.74 : x
  2. Step 2: Convert to fraction form
    5,108.50/7,049.73 = 3,118.74/x
  3. Step 3: Cross multiply
    5,108.50x = 7,049.73 × 3,118.74
  4. Step 4: Simplify right side
    5,108.50x = 21,986,274.94
  5. Step 5: Solve for x
    x = 21,986,274.94/5,108.50
  6. Step 6: Final answer
    x = 4,303.86

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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.