Home / 1,277.09-1,916.98-1,131.77

Finding the Fourth Proportional to 1,277.09, 1,916.98 and 1,131.77

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Solution

The fourth proportional to 1,277.09, 1,916.98 and 1,131.77 is: 1,698.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.09 : 1,916.98 = 1,131.77 : x
  2. Step 2: Convert to fraction form
    1,277.09/1,916.98 = 1,131.77/x
  3. Step 3: Cross multiply
    1,277.09x = 1,916.98 × 1,131.77
  4. Step 4: Simplify right side
    1,277.09x = 2,169,586.66
  5. Step 5: Solve for x
    x = 2,169,586.66/1,277.09
  6. Step 6: Final answer
    x = 1,698.85

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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.