Home / 2,830.99-3,906.58-1,572.05

Finding the Fourth Proportional to 2,830.99, 3,906.58 and 1,572.05

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Solution

The fourth proportional to 2,830.99, 3,906.58 and 1,572.05 is: 2,169.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.99 : 3,906.58 = 1,572.05 : x
  2. Step 2: Convert to fraction form
    2,830.99/3,906.58 = 1,572.05/x
  3. Step 3: Cross multiply
    2,830.99x = 3,906.58 × 1,572.05
  4. Step 4: Simplify right side
    2,830.99x = 6,141,339.09
  5. Step 5: Solve for x
    x = 6,141,339.09/2,830.99
  6. Step 6: Final answer
    x = 2,169.33

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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.