Home / 3,127.55-4,315.35-1,993.65

Finding the Fourth Proportional to 3,127.55, 4,315.35 and 1,993.65

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Solution

The fourth proportional to 3,127.55, 4,315.35 and 1,993.65 is: 2,750.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.55 : 4,315.35 = 1,993.65 : x
  2. Step 2: Convert to fraction form
    3,127.55/4,315.35 = 1,993.65/x
  3. Step 3: Cross multiply
    3,127.55x = 4,315.35 × 1,993.65
  4. Step 4: Simplify right side
    3,127.55x = 8,603,306.23
  5. Step 5: Solve for x
    x = 8,603,306.23/3,127.55
  6. Step 6: Final answer
    x = 2,750.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.