Home / 1,418.13-2,129.18-1,009.89

Finding the Fourth Proportional to 1,418.13, 2,129.18 and 1,009.89

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Solution

The fourth proportional to 1,418.13, 2,129.18 and 1,009.89 is: 1,516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.13 : 2,129.18 = 1,009.89 : x
  2. Step 2: Convert to fraction form
    1,418.13/2,129.18 = 1,009.89/x
  3. Step 3: Cross multiply
    1,418.13x = 2,129.18 × 1,009.89
  4. Step 4: Simplify right side
    1,418.13x = 2,150,232.54
  5. Step 5: Solve for x
    x = 2,150,232.54/1,418.13
  6. Step 6: Final answer
    x = 1,516.25

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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.