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Finding the Fourth Proportional to 2,929.80, 4,392.14 and 1,369.48

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Solution

The fourth proportional to 2,929.80, 4,392.14 and 1,369.48 is: 2,053.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.80 : 4,392.14 = 1,369.48 : x
  2. Step 2: Convert to fraction form
    2,929.80/4,392.14 = 1,369.48/x
  3. Step 3: Cross multiply
    2,929.80x = 4,392.14 × 1,369.48
  4. Step 4: Simplify right side
    2,929.80x = 6,014,947.89
  5. Step 5: Solve for x
    x = 6,014,947.89/2,929.80
  6. Step 6: Final answer
    x = 2,053.02

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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.