Home / 3,926.05-5,417.62-2,157.74

Finding the Fourth Proportional to 3,926.05, 5,417.62 and 2,157.74

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Solution

The fourth proportional to 3,926.05, 5,417.62 and 2,157.74 is: 2,977.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.05 : 5,417.62 = 2,157.74 : x
  2. Step 2: Convert to fraction form
    3,926.05/5,417.62 = 2,157.74/x
  3. Step 3: Cross multiply
    3,926.05x = 5,417.62 × 2,157.74
  4. Step 4: Simplify right side
    3,926.05x = 11,689,815.38
  5. Step 5: Solve for x
    x = 11,689,815.38/3,926.05
  6. Step 6: Final answer
    x = 2,977.50

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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.