Home / 3,121.46-4,307.36-1,794.90

Finding the Fourth Proportional to 3,121.46, 4,307.36 and 1,794.90

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Solution

The fourth proportional to 3,121.46, 4,307.36 and 1,794.90 is: 2,476.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.46 : 4,307.36 = 1,794.90 : x
  2. Step 2: Convert to fraction form
    3,121.46/4,307.36 = 1,794.90/x
  3. Step 3: Cross multiply
    3,121.46x = 4,307.36 × 1,794.90
  4. Step 4: Simplify right side
    3,121.46x = 7,731,271.49
  5. Step 5: Solve for x
    x = 7,731,271.49/3,121.46
  6. Step 6: Final answer
    x = 2,476.82

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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.