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Finding the Fourth Proportional to 2,930.12, 4,395.02 and 738.71

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Solution

The fourth proportional to 2,930.12, 4,395.02 and 738.71 is: 1,108.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.12 : 4,395.02 = 738.71 : x
  2. Step 2: Convert to fraction form
    2,930.12/4,395.02 = 738.71/x
  3. Step 3: Cross multiply
    2,930.12x = 4,395.02 × 738.71
  4. Step 4: Simplify right side
    2,930.12x = 3,246,658.06
  5. Step 5: Solve for x
    x = 3,246,658.06/2,930.12
  6. Step 6: Final answer
    x = 1,108.03

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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.