Home / 1,131.25-1,560.64-799.96

Finding the Fourth Proportional to 1,131.25, 1,560.64 and 799.96

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Solution

The fourth proportional to 1,131.25, 1,560.64 and 799.96 is: 1,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.25 : 1,560.64 = 799.96 : x
  2. Step 2: Convert to fraction form
    1,131.25/1,560.64 = 799.96/x
  3. Step 3: Cross multiply
    1,131.25x = 1,560.64 × 799.96
  4. Step 4: Simplify right side
    1,131.25x = 1,248,437.77
  5. Step 5: Solve for x
    x = 1,248,437.77/1,131.25
  6. Step 6: Final answer
    x = 1,103.60

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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.