Home / 1,435.16-2,154.90-819.56

Finding the Fourth Proportional to 1,435.16, 2,154.90 and 819.56

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Solution

The fourth proportional to 1,435.16, 2,154.90 and 819.56 is: 1,230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.16 : 2,154.90 = 819.56 : x
  2. Step 2: Convert to fraction form
    1,435.16/2,154.90 = 819.56/x
  3. Step 3: Cross multiply
    1,435.16x = 2,154.90 × 819.56
  4. Step 4: Simplify right side
    1,435.16x = 1,766,069.84
  5. Step 5: Solve for x
    x = 1,766,069.84/1,435.16
  6. Step 6: Final answer
    x = 1,230.57

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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.