Home / 1,277.44-1,916.38-399.77

Finding the Fourth Proportional to 1,277.44, 1,916.38 and 399.77

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Solution

The fourth proportional to 1,277.44, 1,916.38 and 399.77 is: 599.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.44 : 1,916.38 = 399.77 : x
  2. Step 2: Convert to fraction form
    1,277.44/1,916.38 = 399.77/x
  3. Step 3: Cross multiply
    1,277.44x = 1,916.38 × 399.77
  4. Step 4: Simplify right side
    1,277.44x = 766,116.02
  5. Step 5: Solve for x
    x = 766,116.02/1,277.44
  6. Step 6: Final answer
    x = 599.73

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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.