Home / 4,780.90-7,171.67-1,270.86

Finding the Fourth Proportional to 4,780.90, 7,171.67 and 1,270.86

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Solution

The fourth proportional to 4,780.90, 7,171.67 and 1,270.86 is: 1,906.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.90 : 7,171.67 = 1,270.86 : x
  2. Step 2: Convert to fraction form
    4,780.90/7,171.67 = 1,270.86/x
  3. Step 3: Cross multiply
    4,780.90x = 7,171.67 × 1,270.86
  4. Step 4: Simplify right side
    4,780.90x = 9,114,146.32
  5. Step 5: Solve for x
    x = 9,114,146.32/4,780.90
  6. Step 6: Final answer
    x = 1,906.37

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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.