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Finding the Fourth Proportional to 2,929.72, 4,394.58 and 738.47

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Solution

The fourth proportional to 2,929.72, 4,394.58 and 738.47 is: 1,107.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.72 : 4,394.58 = 738.47 : x
  2. Step 2: Convert to fraction form
    2,929.72/4,394.58 = 738.47/x
  3. Step 3: Cross multiply
    2,929.72x = 4,394.58 × 738.47
  4. Step 4: Simplify right side
    2,929.72x = 3,245,239.83
  5. Step 5: Solve for x
    x = 3,245,239.83/2,929.72
  6. Step 6: Final answer
    x = 1,107.70

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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.