Home / 1,419.12-2,128.84-444.96

Finding the Fourth Proportional to 1,419.12, 2,128.84 and 444.96

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Solution

The fourth proportional to 1,419.12, 2,128.84 and 444.96 is: 667.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.12 : 2,128.84 = 444.96 : x
  2. Step 2: Convert to fraction form
    1,419.12/2,128.84 = 444.96/x
  3. Step 3: Cross multiply
    1,419.12x = 2,128.84 × 444.96
  4. Step 4: Simplify right side
    1,419.12x = 947,248.65
  5. Step 5: Solve for x
    x = 947,248.65/1,419.12
  6. Step 6: Final answer
    x = 667.49

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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.