Home / 2,830.51-3,906.23-1,571.70

Finding the Fourth Proportional to 2,830.51, 3,906.23 and 1,571.70

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Solution

The fourth proportional to 2,830.51, 3,906.23 and 1,571.70 is: 2,169.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.51 : 3,906.23 = 1,571.70 : x
  2. Step 2: Convert to fraction form
    2,830.51/3,906.23 = 1,571.70/x
  3. Step 3: Cross multiply
    2,830.51x = 3,906.23 × 1,571.70
  4. Step 4: Simplify right side
    2,830.51x = 6,139,421.69
  5. Step 5: Solve for x
    x = 6,139,421.69/2,830.51
  6. Step 6: Final answer
    x = 2,169.02

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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.