Home / 5,421.12-8,132.84-1,723.64

Finding the Fourth Proportional to 5,421.12, 8,132.84 and 1,723.64

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Solution

The fourth proportional to 5,421.12, 8,132.84 and 1,723.64 is: 2,585.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.12 : 8,132.84 = 1,723.64 : x
  2. Step 2: Convert to fraction form
    5,421.12/8,132.84 = 1,723.64/x
  3. Step 3: Cross multiply
    5,421.12x = 8,132.84 × 1,723.64
  4. Step 4: Simplify right side
    5,421.12x = 14,018,088.34
  5. Step 5: Solve for x
    x = 14,018,088.34/5,421.12
  6. Step 6: Final answer
    x = 2,585.83

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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.