Home / 5,161.51-7,122.74-2,803.65

Finding the Fourth Proportional to 5,161.51, 7,122.74 and 2,803.65

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Solution

The fourth proportional to 5,161.51, 7,122.74 and 2,803.65 is: 3,868.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.51 : 7,122.74 = 2,803.65 : x
  2. Step 2: Convert to fraction form
    5,161.51/7,122.74 = 2,803.65/x
  3. Step 3: Cross multiply
    5,161.51x = 7,122.74 × 2,803.65
  4. Step 4: Simplify right side
    5,161.51x = 19,969,629.27
  5. Step 5: Solve for x
    x = 19,969,629.27/5,161.51
  6. Step 6: Final answer
    x = 3,868.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.