Home / 9,786.40-14,679.60-2,860

Finding the Fourth Proportional to 9,786.40, 14,679.60 and 2,860

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Solution

The fourth proportional to 9,786.40, 14,679.60 and 2,860 is: 4,290

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,786.40 : 14,679.60 = 2,860 : x
  2. Step 2: Convert to fraction form
    9,786.40/14,679.60 = 2,860/x
  3. Step 3: Cross multiply
    9,786.40x = 14,679.60 × 2,860
  4. Step 4: Simplify right side
    9,786.40x = 41,983,656
  5. Step 5: Solve for x
    x = 41,983,656/9,786.40
  6. Step 6: Final answer
    x = 4,290

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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.