Home / 5,416.30-8,120.40-2,953.90

Finding the Fourth Proportional to 5,416.30, 8,120.40 and 2,953.90

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Solution

The fourth proportional to 5,416.30, 8,120.40 and 2,953.90 is: 4,428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.30 : 8,120.40 = 2,953.90 : x
  2. Step 2: Convert to fraction form
    5,416.30/8,120.40 = 2,953.90/x
  3. Step 3: Cross multiply
    5,416.30x = 8,120.40 × 2,953.90
  4. Step 4: Simplify right side
    5,416.30x = 23,986,849.56
  5. Step 5: Solve for x
    x = 23,986,849.56/5,416.30
  6. Step 6: Final answer
    x = 4,428.64

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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.