Home / 1,530.96-2,112.54-867.78

Finding the Fourth Proportional to 1,530.96, 2,112.54 and 867.78

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Solution

The fourth proportional to 1,530.96, 2,112.54 and 867.78 is: 1,197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.96 : 2,112.54 = 867.78 : x
  2. Step 2: Convert to fraction form
    1,530.96/2,112.54 = 867.78/x
  3. Step 3: Cross multiply
    1,530.96x = 2,112.54 × 867.78
  4. Step 4: Simplify right side
    1,530.96x = 1,833,219.96
  5. Step 5: Solve for x
    x = 1,833,219.96/1,530.96
  6. Step 6: Final answer
    x = 1,197.43

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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.