Home / 5,478.18-8,211.60-3,012.15

Finding the Fourth Proportional to 5,478.18, 8,211.60 and 3,012.15

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Solution

The fourth proportional to 5,478.18, 8,211.60 and 3,012.15 is: 4,515.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.18 : 8,211.60 = 3,012.15 : x
  2. Step 2: Convert to fraction form
    5,478.18/8,211.60 = 3,012.15/x
  3. Step 3: Cross multiply
    5,478.18x = 8,211.60 × 3,012.15
  4. Step 4: Simplify right side
    5,478.18x = 24,734,570.94
  5. Step 5: Solve for x
    x = 24,734,570.94/5,478.18
  6. Step 6: Final answer
    x = 4,515.11

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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.