Home / 1,077.24-1,487.44-828.16

Finding the Fourth Proportional to 1,077.24, 1,487.44 and 828.16

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Solution

The fourth proportional to 1,077.24, 1,487.44 and 828.16 is: 1,143.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.24 : 1,487.44 = 828.16 : x
  2. Step 2: Convert to fraction form
    1,077.24/1,487.44 = 828.16/x
  3. Step 3: Cross multiply
    1,077.24x = 1,487.44 × 828.16
  4. Step 4: Simplify right side
    1,077.24x = 1,231,838.31
  5. Step 5: Solve for x
    x = 1,231,838.31/1,077.24
  6. Step 6: Final answer
    x = 1,143.51

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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.