Home / 1,435.03-2,153.45-819.93

Finding the Fourth Proportional to 1,435.03, 2,153.45 and 819.93

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Solution

The fourth proportional to 1,435.03, 2,153.45 and 819.93 is: 1,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.03 : 2,153.45 = 819.93 : x
  2. Step 2: Convert to fraction form
    1,435.03/2,153.45 = 819.93/x
  3. Step 3: Cross multiply
    1,435.03x = 2,153.45 × 819.93
  4. Step 4: Simplify right side
    1,435.03x = 1,765,678.26
  5. Step 5: Solve for x
    x = 1,765,678.26/1,435.03
  6. Step 6: Final answer
    x = 1,230.41

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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.