Home / 1,419.08-2,128.29-444.95

Finding the Fourth Proportional to 1,419.08, 2,128.29 and 444.95

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Solution

The fourth proportional to 1,419.08, 2,128.29 and 444.95 is: 667.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.08 : 2,128.29 = 444.95 : x
  2. Step 2: Convert to fraction form
    1,419.08/2,128.29 = 444.95/x
  3. Step 3: Cross multiply
    1,419.08x = 2,128.29 × 444.95
  4. Step 4: Simplify right side
    1,419.08x = 946,971.99
  5. Step 5: Solve for x
    x = 946,971.99/1,419.08
  6. Step 6: Final answer
    x = 667.32

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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.