Home / 1,310.61-1,965.10-616.85

Finding the Fourth Proportional to 1,310.61, 1,965.10 and 616.85

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Solution

The fourth proportional to 1,310.61, 1,965.10 and 616.85 is: 924.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.61 : 1,965.10 = 616.85 : x
  2. Step 2: Convert to fraction form
    1,310.61/1,965.10 = 616.85/x
  3. Step 3: Cross multiply
    1,310.61x = 1,965.10 × 616.85
  4. Step 4: Simplify right side
    1,310.61x = 1,212,171.94
  5. Step 5: Solve for x
    x = 1,212,171.94/1,310.61
  6. Step 6: Final answer
    x = 924.89

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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.