Home / 3,916.45-5,404.77-2,148.22

Finding the Fourth Proportional to 3,916.45, 5,404.77 and 2,148.22

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Solution

The fourth proportional to 3,916.45, 5,404.77 and 2,148.22 is: 2,964.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.45 : 5,404.77 = 2,148.22 : x
  2. Step 2: Convert to fraction form
    3,916.45/5,404.77 = 2,148.22/x
  3. Step 3: Cross multiply
    3,916.45x = 5,404.77 × 2,148.22
  4. Step 4: Simplify right side
    3,916.45x = 11,610,635.01
  5. Step 5: Solve for x
    x = 11,610,635.01/3,916.45
  6. Step 6: Final answer
    x = 2,964.58

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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.