Home / 1,719.55-2,579.28-486.96

Finding the Fourth Proportional to 1,719.55, 2,579.28 and 486.96

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Solution

The fourth proportional to 1,719.55, 2,579.28 and 486.96 is: 730.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.55 : 2,579.28 = 486.96 : x
  2. Step 2: Convert to fraction form
    1,719.55/2,579.28 = 486.96/x
  3. Step 3: Cross multiply
    1,719.55x = 2,579.28 × 486.96
  4. Step 4: Simplify right side
    1,719.55x = 1,256,006.19
  5. Step 5: Solve for x
    x = 1,256,006.19/1,719.55
  6. Step 6: Final answer
    x = 730.43

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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.