Home / 2,930.12-4,395.21-1,696.78

Finding the Fourth Proportional to 2,930.12, 4,395.21 and 1,696.78

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Solution

The fourth proportional to 2,930.12, 4,395.21 and 1,696.78 is: 2,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.12 : 4,395.21 = 1,696.78 : x
  2. Step 2: Convert to fraction form
    2,930.12/4,395.21 = 1,696.78/x
  3. Step 3: Cross multiply
    2,930.12x = 4,395.21 × 1,696.78
  4. Step 4: Simplify right side
    2,930.12x = 7,457,704.42
  5. Step 5: Solve for x
    x = 7,457,704.42/2,930.12
  6. Step 6: Final answer
    x = 2,545.19

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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.