Home / 2,405.32-3,319.30-1,357.40

Finding the Fourth Proportional to 2,405.32, 3,319.30 and 1,357.40

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Solution

The fourth proportional to 2,405.32, 3,319.30 and 1,357.40 is: 1,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.32 : 3,319.30 = 1,357.40 : x
  2. Step 2: Convert to fraction form
    2,405.32/3,319.30 = 1,357.40/x
  3. Step 3: Cross multiply
    2,405.32x = 3,319.30 × 1,357.40
  4. Step 4: Simplify right side
    2,405.32x = 4,505,617.82
  5. Step 5: Solve for x
    x = 4,505,617.82/2,405.32
  6. Step 6: Final answer
    x = 1,873.19

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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.