Home / 5,428.19-8,143.32-3,580.88

Finding the Fourth Proportional to 5,428.19, 8,143.32 and 3,580.88

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Solution

The fourth proportional to 5,428.19, 8,143.32 and 3,580.88 is: 5,372.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.19 : 8,143.32 = 3,580.88 : x
  2. Step 2: Convert to fraction form
    5,428.19/8,143.32 = 3,580.88/x
  3. Step 3: Cross multiply
    5,428.19x = 8,143.32 × 3,580.88
  4. Step 4: Simplify right side
    5,428.19x = 29,160,211.01
  5. Step 5: Solve for x
    x = 29,160,211.01/5,428.19
  6. Step 6: Final answer
    x = 5,372.00

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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.