Home / 1,869.52-2,579.90-1,171.28

Finding the Fourth Proportional to 1,869.52, 2,579.90 and 1,171.28

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Solution

The fourth proportional to 1,869.52, 2,579.90 and 1,171.28 is: 1,616.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.52 : 2,579.90 = 1,171.28 : x
  2. Step 2: Convert to fraction form
    1,869.52/2,579.90 = 1,171.28/x
  3. Step 3: Cross multiply
    1,869.52x = 2,579.90 × 1,171.28
  4. Step 4: Simplify right side
    1,869.52x = 3,021,785.27
  5. Step 5: Solve for x
    x = 3,021,785.27/1,869.52
  6. Step 6: Final answer
    x = 1,616.34

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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.