Home / 5,122.45-7,683.63-2,813.95

Finding the Fourth Proportional to 5,122.45, 7,683.63 and 2,813.95

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Solution

The fourth proportional to 5,122.45, 7,683.63 and 2,813.95 is: 4,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.45 : 7,683.63 = 2,813.95 : x
  2. Step 2: Convert to fraction form
    5,122.45/7,683.63 = 2,813.95/x
  3. Step 3: Cross multiply
    5,122.45x = 7,683.63 × 2,813.95
  4. Step 4: Simplify right side
    5,122.45x = 21,621,350.64
  5. Step 5: Solve for x
    x = 21,621,350.64/5,122.45
  6. Step 6: Final answer
    x = 4,220.90

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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.