Home / 1,310.58-1,815.89-1,282.77

Finding the Fourth Proportional to 1,310.58, 1,815.89 and 1,282.77

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Solution

The fourth proportional to 1,310.58, 1,815.89 and 1,282.77 is: 1,777.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.58 : 1,815.89 = 1,282.77 : x
  2. Step 2: Convert to fraction form
    1,310.58/1,815.89 = 1,282.77/x
  3. Step 3: Cross multiply
    1,310.58x = 1,815.89 × 1,282.77
  4. Step 4: Simplify right side
    1,310.58x = 2,329,362.80
  5. Step 5: Solve for x
    x = 2,329,362.80/1,310.58
  6. Step 6: Final answer
    x = 1,777.35

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.