Home / 1,783.11-2,675.67-961.36

Finding the Fourth Proportional to 1,783.11, 2,675.67 and 961.36

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Solution

The fourth proportional to 1,783.11, 2,675.67 and 961.36 is: 1,442.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.11 : 2,675.67 = 961.36 : x
  2. Step 2: Convert to fraction form
    1,783.11/2,675.67 = 961.36/x
  3. Step 3: Cross multiply
    1,783.11x = 2,675.67 × 961.36
  4. Step 4: Simplify right side
    1,783.11x = 2,572,282.11
  5. Step 5: Solve for x
    x = 2,572,282.11/1,783.11
  6. Step 6: Final answer
    x = 1,442.59

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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.