Home / 2,405.26-3,318.99-1,357.12

Finding the Fourth Proportional to 2,405.26, 3,318.99 and 1,357.12

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Solution

The fourth proportional to 2,405.26, 3,318.99 and 1,357.12 is: 1,872.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.26 : 3,318.99 = 1,357.12 : x
  2. Step 2: Convert to fraction form
    2,405.26/3,318.99 = 1,357.12/x
  3. Step 3: Cross multiply
    2,405.26x = 3,318.99 × 1,357.12
  4. Step 4: Simplify right side
    2,405.26x = 4,504,267.71
  5. Step 5: Solve for x
    x = 4,504,267.71/2,405.26
  6. Step 6: Final answer
    x = 1,872.67

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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.