Home / 1,550.18-2,139.21-877.97

Finding the Fourth Proportional to 1,550.18, 2,139.21 and 877.97

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Solution

The fourth proportional to 1,550.18, 2,139.21 and 877.97 is: 1,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.18 : 2,139.21 = 877.97 : x
  2. Step 2: Convert to fraction form
    1,550.18/2,139.21 = 877.97/x
  3. Step 3: Cross multiply
    1,550.18x = 2,139.21 × 877.97
  4. Step 4: Simplify right side
    1,550.18x = 1,878,162.20
  5. Step 5: Solve for x
    x = 1,878,162.20/1,550.18
  6. Step 6: Final answer
    x = 1,211.58

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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.