Home / 1,307.31-1,961.60-576.79

Finding the Fourth Proportional to 1,307.31, 1,961.60 and 576.79

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Solution

The fourth proportional to 1,307.31, 1,961.60 and 576.79 is: 865.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.31 : 1,961.60 = 576.79 : x
  2. Step 2: Convert to fraction form
    1,307.31/1,961.60 = 576.79/x
  3. Step 3: Cross multiply
    1,307.31x = 1,961.60 × 576.79
  4. Step 4: Simplify right side
    1,307.31x = 1,131,428.38
  5. Step 5: Solve for x
    x = 1,131,428.38/1,307.31
  6. Step 6: Final answer
    x = 865.47

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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.