Home / 2,771.68-4,151.76-2,153.20

Finding the Fourth Proportional to 2,771.68, 4,151.76 and 2,153.20

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Solution

The fourth proportional to 2,771.68, 4,151.76 and 2,153.20 is: 3,225.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.68 : 4,151.76 = 2,153.20 : x
  2. Step 2: Convert to fraction form
    2,771.68/4,151.76 = 2,153.20/x
  3. Step 3: Cross multiply
    2,771.68x = 4,151.76 × 2,153.20
  4. Step 4: Simplify right side
    2,771.68x = 8,939,569.63
  5. Step 5: Solve for x
    x = 8,939,569.63/2,771.68
  6. Step 6: Final answer
    x = 3,225.33

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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.