Home / 2,816.95-4,222.19-1,515.69

Finding the Fourth Proportional to 2,816.95, 4,222.19 and 1,515.69

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Solution

The fourth proportional to 2,816.95, 4,222.19 and 1,515.69 is: 2,271.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.95 : 4,222.19 = 1,515.69 : x
  2. Step 2: Convert to fraction form
    2,816.95/4,222.19 = 1,515.69/x
  3. Step 3: Cross multiply
    2,816.95x = 4,222.19 × 1,515.69
  4. Step 4: Simplify right side
    2,816.95x = 6,399,531.16
  5. Step 5: Solve for x
    x = 6,399,531.16/2,816.95
  6. Step 6: Final answer
    x = 2,271.79

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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.