Home / 1,518.87-2,277.89-423.29

Finding the Fourth Proportional to 1,518.87, 2,277.89 and 423.29

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Solution

The fourth proportional to 1,518.87, 2,277.89 and 423.29 is: 634.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.87 : 2,277.89 = 423.29 : x
  2. Step 2: Convert to fraction form
    1,518.87/2,277.89 = 423.29/x
  3. Step 3: Cross multiply
    1,518.87x = 2,277.89 × 423.29
  4. Step 4: Simplify right side
    1,518.87x = 964,214.81
  5. Step 5: Solve for x
    x = 964,214.81/1,518.87
  6. Step 6: Final answer
    x = 634.82

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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.