Home / 1,277.38-1,916.43-455.86

Finding the Fourth Proportional to 1,277.38, 1,916.43 and 455.86

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Solution

The fourth proportional to 1,277.38, 1,916.43 and 455.86 is: 683.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.38 : 1,916.43 = 455.86 : x
  2. Step 2: Convert to fraction form
    1,277.38/1,916.43 = 455.86/x
  3. Step 3: Cross multiply
    1,277.38x = 1,916.43 × 455.86
  4. Step 4: Simplify right side
    1,277.38x = 873,623.78
  5. Step 5: Solve for x
    x = 873,623.78/1,277.38
  6. Step 6: Final answer
    x = 683.92

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1.5x scale

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.