Home / 5,449.80-8,178.30-3,109.80

Finding the Fourth Proportional to 5,449.80, 8,178.30 and 3,109.80

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Solution

The fourth proportional to 5,449.80, 8,178.30 and 3,109.80 is: 4,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,449.80 : 8,178.30 = 3,109.80 : x
  2. Step 2: Convert to fraction form
    5,449.80/8,178.30 = 3,109.80/x
  3. Step 3: Cross multiply
    5,449.80x = 8,178.30 × 3,109.80
  4. Step 4: Simplify right side
    5,449.80x = 25,432,877.34
  5. Step 5: Solve for x
    x = 25,432,877.34/5,449.80
  6. Step 6: Final answer
    x = 4,666.75

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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.