Home / 6,440.69-9,662.40-1,998.65

Finding the Fourth Proportional to 6,440.69, 9,662.40 and 1,998.65

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Solution

The fourth proportional to 6,440.69, 9,662.40 and 1,998.65 is: 2,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.69 : 9,662.40 = 1,998.65 : x
  2. Step 2: Convert to fraction form
    6,440.69/9,662.40 = 1,998.65/x
  3. Step 3: Cross multiply
    6,440.69x = 9,662.40 × 1,998.65
  4. Step 4: Simplify right side
    6,440.69x = 19,311,779.92
  5. Step 5: Solve for x
    x = 19,311,779.92/6,440.69
  6. Step 6: Final answer
    x = 2,998.40

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1.5x scale

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.