Home / 3,121.18-4,682.35-1,040.98

Finding the Fourth Proportional to 3,121.18, 4,682.35 and 1,040.98

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Solution

The fourth proportional to 3,121.18, 4,682.35 and 1,040.98 is: 1,561.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.18 : 4,682.35 = 1,040.98 : x
  2. Step 2: Convert to fraction form
    3,121.18/4,682.35 = 1,040.98/x
  3. Step 3: Cross multiply
    3,121.18x = 4,682.35 × 1,040.98
  4. Step 4: Simplify right side
    3,121.18x = 4,874,232.70
  5. Step 5: Solve for x
    x = 4,874,232.70/3,121.18
  6. Step 6: Final answer
    x = 1,561.66

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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.