Home / 4,920.10-6,782.16-3,923.80

Finding the Fourth Proportional to 4,920.10, 6,782.16 and 3,923.80

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Solution

The fourth proportional to 4,920.10, 6,782.16 and 3,923.80 is: 5,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.10 : 6,782.16 = 3,923.80 : x
  2. Step 2: Convert to fraction form
    4,920.10/6,782.16 = 3,923.80/x
  3. Step 3: Cross multiply
    4,920.10x = 6,782.16 × 3,923.80
  4. Step 4: Simplify right side
    4,920.10x = 26,611,839.41
  5. Step 5: Solve for x
    x = 26,611,839.41/4,920.10
  6. Step 6: Final answer
    x = 5,408.80

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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.