Home / 5,416.29-8,123.94-1,720.96

Finding the Fourth Proportional to 5,416.29, 8,123.94 and 1,720.96

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Solution

The fourth proportional to 5,416.29, 8,123.94 and 1,720.96 is: 2,581.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.29 : 8,123.94 = 1,720.96 : x
  2. Step 2: Convert to fraction form
    5,416.29/8,123.94 = 1,720.96/x
  3. Step 3: Cross multiply
    5,416.29x = 8,123.94 × 1,720.96
  4. Step 4: Simplify right side
    5,416.29x = 13,980,955.47
  5. Step 5: Solve for x
    x = 13,980,955.47/5,416.29
  6. Step 6: Final answer
    x = 2,581.28

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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.