Home / 2,788.20-4,176.62-1,322.92

Finding the Fourth Proportional to 2,788.20, 4,176.62 and 1,322.92

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Solution

The fourth proportional to 2,788.20, 4,176.62 and 1,322.92 is: 1,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.20 : 4,176.62 = 1,322.92 : x
  2. Step 2: Convert to fraction form
    2,788.20/4,176.62 = 1,322.92/x
  3. Step 3: Cross multiply
    2,788.20x = 4,176.62 × 1,322.92
  4. Step 4: Simplify right side
    2,788.20x = 5,525,334.13
  5. Step 5: Solve for x
    x = 5,525,334.13/2,788.20
  6. Step 6: Final answer
    x = 1,981.69

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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.