Home / 7,140.06-10,712.62-3,190.95

Finding the Fourth Proportional to 7,140.06, 10,712.62 and 3,190.95

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Solution

The fourth proportional to 7,140.06, 10,712.62 and 3,190.95 is: 4,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.06 : 10,712.62 = 3,190.95 : x
  2. Step 2: Convert to fraction form
    7,140.06/10,712.62 = 3,190.95/x
  3. Step 3: Cross multiply
    7,140.06x = 10,712.62 × 3,190.95
  4. Step 4: Simplify right side
    7,140.06x = 34,183,418.83
  5. Step 5: Solve for x
    x = 34,183,418.83/7,140.06
  6. Step 6: Final answer
    x = 4,787.56

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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.