Home / 5,417.28-8,126.21-1,719.80

Finding the Fourth Proportional to 5,417.28, 8,126.21 and 1,719.80

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Solution

The fourth proportional to 5,417.28, 8,126.21 and 1,719.80 is: 2,579.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.28 : 8,126.21 = 1,719.80 : x
  2. Step 2: Convert to fraction form
    5,417.28/8,126.21 = 1,719.80/x
  3. Step 3: Cross multiply
    5,417.28x = 8,126.21 × 1,719.80
  4. Step 4: Simplify right side
    5,417.28x = 13,975,455.96
  5. Step 5: Solve for x
    x = 13,975,455.96/5,417.28
  6. Step 6: Final answer
    x = 2,579.79

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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.