Home / 7,190.93-10,787.29-2,811.47

Finding the Fourth Proportional to 7,190.93, 10,787.29 and 2,811.47

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Solution

The fourth proportional to 7,190.93, 10,787.29 and 2,811.47 is: 4,217.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.93 : 10,787.29 = 2,811.47 : x
  2. Step 2: Convert to fraction form
    7,190.93/10,787.29 = 2,811.47/x
  3. Step 3: Cross multiply
    7,190.93x = 10,787.29 × 2,811.47
  4. Step 4: Simplify right side
    7,190.93x = 30,328,081.25
  5. Step 5: Solve for x
    x = 30,328,081.25/7,190.93
  6. Step 6: Final answer
    x = 4,217.54

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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.