Home / 6,440.38-8,888.43-3,608.21

Finding the Fourth Proportional to 6,440.38, 8,888.43 and 3,608.21

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Solution

The fourth proportional to 6,440.38, 8,888.43 and 3,608.21 is: 4,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.38 : 8,888.43 = 3,608.21 : x
  2. Step 2: Convert to fraction form
    6,440.38/8,888.43 = 3,608.21/x
  3. Step 3: Cross multiply
    6,440.38x = 8,888.43 × 3,608.21
  4. Step 4: Simplify right side
    6,440.38x = 32,071,357.76
  5. Step 5: Solve for x
    x = 32,071,357.76/6,440.38
  6. Step 6: Final answer
    x = 4,979.73

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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.