Home / 5,190.93-7,780.32-3,112.47

Finding the Fourth Proportional to 5,190.93, 7,780.32 and 3,112.47

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Solution

The fourth proportional to 5,190.93, 7,780.32 and 3,112.47 is: 4,665.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.93 : 7,780.32 = 3,112.47 : x
  2. Step 2: Convert to fraction form
    5,190.93/7,780.32 = 3,112.47/x
  3. Step 3: Cross multiply
    5,190.93x = 7,780.32 × 3,112.47
  4. Step 4: Simplify right side
    5,190.93x = 24,216,012.59
  5. Step 5: Solve for x
    x = 24,216,012.59/5,190.93
  6. Step 6: Final answer
    x = 4,665.06

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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.