Home / 1,072.35-1,483.10-961.79

Finding the Fourth Proportional to 1,072.35, 1,483.10 and 961.79

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Solution

The fourth proportional to 1,072.35, 1,483.10 and 961.79 is: 1,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072.35 : 1,483.10 = 961.79 : x
  2. Step 2: Convert to fraction form
    1,072.35/1,483.10 = 961.79/x
  3. Step 3: Cross multiply
    1,072.35x = 1,483.10 × 961.79
  4. Step 4: Simplify right side
    1,072.35x = 1,426,425.74
  5. Step 5: Solve for x
    x = 1,426,425.74/1,072.35
  6. Step 6: Final answer
    x = 1,330.19

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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.