Home / 1,719.05-2,578.71-486.47

Finding the Fourth Proportional to 1,719.05, 2,578.71 and 486.47

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Solution

The fourth proportional to 1,719.05, 2,578.71 and 486.47 is: 729.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.05 : 2,578.71 = 486.47 : x
  2. Step 2: Convert to fraction form
    1,719.05/2,578.71 = 486.47/x
  3. Step 3: Cross multiply
    1,719.05x = 2,578.71 × 486.47
  4. Step 4: Simplify right side
    1,719.05x = 1,254,450.94
  5. Step 5: Solve for x
    x = 1,254,450.94/1,719.05
  6. Step 6: Final answer
    x = 729.74

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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.