Home / 3,916.17-5,404.40-2,147.77

Finding the Fourth Proportional to 3,916.17, 5,404.40 and 2,147.77

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Solution

The fourth proportional to 3,916.17, 5,404.40 and 2,147.77 is: 2,963.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.17 : 5,404.40 = 2,147.77 : x
  2. Step 2: Convert to fraction form
    3,916.17/5,404.40 = 2,147.77/x
  3. Step 3: Cross multiply
    3,916.17x = 5,404.40 × 2,147.77
  4. Step 4: Simplify right side
    3,916.17x = 11,607,412.26
  5. Step 5: Solve for x
    x = 11,607,412.26/3,916.17
  6. Step 6: Final answer
    x = 2,963.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.