Home / 5,188.20-7,782.30-3,114.60

Finding the Fourth Proportional to 5,188.20, 7,782.30 and 3,114.60

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Solution

The fourth proportional to 5,188.20, 7,782.30 and 3,114.60 is: 4,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.20 : 7,782.30 = 3,114.60 : x
  2. Step 2: Convert to fraction form
    5,188.20/7,782.30 = 3,114.60/x
  3. Step 3: Cross multiply
    5,188.20x = 7,782.30 × 3,114.60
  4. Step 4: Simplify right side
    5,188.20x = 24,238,751.58
  5. Step 5: Solve for x
    x = 24,238,751.58/5,188.20
  6. Step 6: Final answer
    x = 4,671.90

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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.