Home / 2,905.76-4,350.36-1,929.92

Finding the Fourth Proportional to 2,905.76, 4,350.36 and 1,929.92

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Solution

The fourth proportional to 2,905.76, 4,350.36 and 1,929.92 is: 2,889.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.76 : 4,350.36 = 1,929.92 : x
  2. Step 2: Convert to fraction form
    2,905.76/4,350.36 = 1,929.92/x
  3. Step 3: Cross multiply
    2,905.76x = 4,350.36 × 1,929.92
  4. Step 4: Simplify right side
    2,905.76x = 8,395,846.77
  5. Step 5: Solve for x
    x = 8,395,846.77/2,905.76
  6. Step 6: Final answer
    x = 2,889.38

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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.