Home / 4,305.79-6,448.43-2,990.86

Finding the Fourth Proportional to 4,305.79, 6,448.43 and 2,990.86

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Solution

The fourth proportional to 4,305.79, 6,448.43 and 2,990.86 is: 4,479.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,305.79 : 6,448.43 = 2,990.86 : x
  2. Step 2: Convert to fraction form
    4,305.79/6,448.43 = 2,990.86/x
  3. Step 3: Cross multiply
    4,305.79x = 6,448.43 × 2,990.86
  4. Step 4: Simplify right side
    4,305.79x = 19,286,351.35
  5. Step 5: Solve for x
    x = 19,286,351.35/4,305.79
  6. Step 6: Final answer
    x = 4,479.17

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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.