Home / 1,913.31-2,640.41-1,354.77

Finding the Fourth Proportional to 1,913.31, 2,640.41 and 1,354.77

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Solution

The fourth proportional to 1,913.31, 2,640.41 and 1,354.77 is: 1,869.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.31 : 2,640.41 = 1,354.77 : x
  2. Step 2: Convert to fraction form
    1,913.31/2,640.41 = 1,354.77/x
  3. Step 3: Cross multiply
    1,913.31x = 2,640.41 × 1,354.77
  4. Step 4: Simplify right side
    1,913.31x = 3,577,141.48
  5. Step 5: Solve for x
    x = 3,577,141.48/1,913.31
  6. Step 6: Final answer
    x = 1,869.61

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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.