Home / 2,622.95-3,618.79-1,782.20

Finding the Fourth Proportional to 2,622.95, 3,618.79 and 1,782.20

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Solution

The fourth proportional to 2,622.95, 3,618.79 and 1,782.20 is: 2,458.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.95 : 3,618.79 = 1,782.20 : x
  2. Step 2: Convert to fraction form
    2,622.95/3,618.79 = 1,782.20/x
  3. Step 3: Cross multiply
    2,622.95x = 3,618.79 × 1,782.20
  4. Step 4: Simplify right side
    2,622.95x = 6,449,422.15
  5. Step 5: Solve for x
    x = 6,449,422.15/2,622.95
  6. Step 6: Final answer
    x = 2,458.84

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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.