Home / 4,780.19-7,170.61-1,270.15

Finding the Fourth Proportional to 4,780.19, 7,170.61 and 1,270.15

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Solution

The fourth proportional to 4,780.19, 7,170.61 and 1,270.15 is: 1,905.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.19 : 7,170.61 = 1,270.15 : x
  2. Step 2: Convert to fraction form
    4,780.19/7,170.61 = 1,270.15/x
  3. Step 3: Cross multiply
    4,780.19x = 7,170.61 × 1,270.15
  4. Step 4: Simplify right side
    4,780.19x = 9,107,743.94
  5. Step 5: Solve for x
    x = 9,107,743.94/4,780.19
  6. Step 6: Final answer
    x = 1,905.31

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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.