Home / 1,489.15-2,055.05-826.03

Finding the Fourth Proportional to 1,489.15, 2,055.05 and 826.03

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Solution

The fourth proportional to 1,489.15, 2,055.05 and 826.03 is: 1,139.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.15 : 2,055.05 = 826.03 : x
  2. Step 2: Convert to fraction form
    1,489.15/2,055.05 = 826.03/x
  3. Step 3: Cross multiply
    1,489.15x = 2,055.05 × 826.03
  4. Step 4: Simplify right side
    1,489.15x = 1,697,532.95
  5. Step 5: Solve for x
    x = 1,697,532.95/1,489.15
  6. Step 6: Final answer
    x = 1,139.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.