Home / 5,419.38-8,130.06-1,720.60

Finding the Fourth Proportional to 5,419.38, 8,130.06 and 1,720.60

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Solution

The fourth proportional to 5,419.38, 8,130.06 and 1,720.60 is: 2,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.38 : 8,130.06 = 1,720.60 : x
  2. Step 2: Convert to fraction form
    5,419.38/8,130.06 = 1,720.60/x
  3. Step 3: Cross multiply
    5,419.38x = 8,130.06 × 1,720.60
  4. Step 4: Simplify right side
    5,419.38x = 13,988,581.24
  5. Step 5: Solve for x
    x = 13,988,581.24/5,419.38
  6. Step 6: Final answer
    x = 2,581.21

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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.