Home / 1,624.45-2,431.80-1,405.75

Finding the Fourth Proportional to 1,624.45, 2,431.80 and 1,405.75

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Solution

The fourth proportional to 1,624.45, 2,431.80 and 1,405.75 is: 2,104.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.45 : 2,431.80 = 1,405.75 : x
  2. Step 2: Convert to fraction form
    1,624.45/2,431.80 = 1,405.75/x
  3. Step 3: Cross multiply
    1,624.45x = 2,431.80 × 1,405.75
  4. Step 4: Simplify right side
    1,624.45x = 3,418,502.85
  5. Step 5: Solve for x
    x = 3,418,502.85/1,624.45
  6. Step 6: Final answer
    x = 2,104.41

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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.