Home / 1,385.24-2,076.53-890.25

Finding the Fourth Proportional to 1,385.24, 2,076.53 and 890.25

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Solution

The fourth proportional to 1,385.24, 2,076.53 and 890.25 is: 1,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.24 : 2,076.53 = 890.25 : x
  2. Step 2: Convert to fraction form
    1,385.24/2,076.53 = 890.25/x
  3. Step 3: Cross multiply
    1,385.24x = 2,076.53 × 890.25
  4. Step 4: Simplify right side
    1,385.24x = 1,848,626.38
  5. Step 5: Solve for x
    x = 1,848,626.38/1,385.24
  6. Step 6: Final answer
    x = 1,334.52

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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.