Home / 2,405.12-3,319.36-1,357.44

Finding the Fourth Proportional to 2,405.12, 3,319.36 and 1,357.44

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Solution

The fourth proportional to 2,405.12, 3,319.36 and 1,357.44 is: 1,873.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.12 : 3,319.36 = 1,357.44 : x
  2. Step 2: Convert to fraction form
    2,405.12/3,319.36 = 1,357.44/x
  3. Step 3: Cross multiply
    2,405.12x = 3,319.36 × 1,357.44
  4. Step 4: Simplify right side
    2,405.12x = 4,505,832.04
  5. Step 5: Solve for x
    x = 4,505,832.04/2,405.12
  6. Step 6: Final answer
    x = 1,873.43

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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.