Home / 5,416.96-8,123.64-2,129.20

Finding the Fourth Proportional to 5,416.96, 8,123.64 and 2,129.20

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Solution

The fourth proportional to 5,416.96, 8,123.64 and 2,129.20 is: 3,193.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.96 : 8,123.64 = 2,129.20 : x
  2. Step 2: Convert to fraction form
    5,416.96/8,123.64 = 2,129.20/x
  3. Step 3: Cross multiply
    5,416.96x = 8,123.64 × 2,129.20
  4. Step 4: Simplify right side
    5,416.96x = 17,296,854.29
  5. Step 5: Solve for x
    x = 17,296,854.29/5,416.96
  6. Step 6: Final answer
    x = 3,193.09

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1.5x scale

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.