Home / 4,518.80-6,777.30-2,178.80

Finding the Fourth Proportional to 4,518.80, 6,777.30 and 2,178.80

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Solution

The fourth proportional to 4,518.80, 6,777.30 and 2,178.80 is: 3,267.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,518.80 : 6,777.30 = 2,178.80 : x
  2. Step 2: Convert to fraction form
    4,518.80/6,777.30 = 2,178.80/x
  3. Step 3: Cross multiply
    4,518.80x = 6,777.30 × 2,178.80
  4. Step 4: Simplify right side
    4,518.80x = 14,766,381.24
  5. Step 5: Solve for x
    x = 14,766,381.24/4,518.80
  6. Step 6: Final answer
    x = 3,267.77

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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.