Home / 2,929.72-4,044.18-1,921.81

Finding the Fourth Proportional to 2,929.72, 4,044.18 and 1,921.81

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Solution

The fourth proportional to 2,929.72, 4,044.18 and 1,921.81 is: 2,652.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.72 : 4,044.18 = 1,921.81 : x
  2. Step 2: Convert to fraction form
    2,929.72/4,044.18 = 1,921.81/x
  3. Step 3: Cross multiply
    2,929.72x = 4,044.18 × 1,921.81
  4. Step 4: Simplify right side
    2,929.72x = 7,772,145.57
  5. Step 5: Solve for x
    x = 7,772,145.57/2,929.72
  6. Step 6: Final answer
    x = 2,652.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.