Home / 1,505.18-2,077.25-842.20

Finding the Fourth Proportional to 1,505.18, 2,077.25 and 842.20

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Solution

The fourth proportional to 1,505.18, 2,077.25 and 842.20 is: 1,162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.18 : 2,077.25 = 842.20 : x
  2. Step 2: Convert to fraction form
    1,505.18/2,077.25 = 842.20/x
  3. Step 3: Cross multiply
    1,505.18x = 2,077.25 × 842.20
  4. Step 4: Simplify right side
    1,505.18x = 1,749,450.55
  5. Step 5: Solve for x
    x = 1,749,450.55/1,505.18
  6. Step 6: Final answer
    x = 1,162.28

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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.