Home / 4,179.80-6,261.18-1,981.86

Finding the Fourth Proportional to 4,179.80, 6,261.18 and 1,981.86

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Solution

The fourth proportional to 4,179.80, 6,261.18 and 1,981.86 is: 2,968.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,179.80 : 6,261.18 = 1,981.86 : x
  2. Step 2: Convert to fraction form
    4,179.80/6,261.18 = 1,981.86/x
  3. Step 3: Cross multiply
    4,179.80x = 6,261.18 × 1,981.86
  4. Step 4: Simplify right side
    4,179.80x = 12,408,782.19
  5. Step 5: Solve for x
    x = 12,408,782.19/4,179.80
  6. Step 6: Final answer
    x = 2,968.75

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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.