Home / 5,419.16-8,123.44-2,645.72

Finding the Fourth Proportional to 5,419.16, 8,123.44 and 2,645.72

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Solution

The fourth proportional to 5,419.16, 8,123.44 and 2,645.72 is: 3,965.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.16 : 8,123.44 = 2,645.72 : x
  2. Step 2: Convert to fraction form
    5,419.16/8,123.44 = 2,645.72/x
  3. Step 3: Cross multiply
    5,419.16x = 8,123.44 × 2,645.72
  4. Step 4: Simplify right side
    5,419.16x = 21,492,347.68
  5. Step 5: Solve for x
    x = 21,492,347.68/5,419.16
  6. Step 6: Final answer
    x = 3,965.99

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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.