Home / 5,459.80-8,189.88-1,563.88

Finding the Fourth Proportional to 5,459.80, 8,189.88 and 1,563.88

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Solution

The fourth proportional to 5,459.80, 8,189.88 and 1,563.88 is: 2,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.80 : 8,189.88 = 1,563.88 : x
  2. Step 2: Convert to fraction form
    5,459.80/8,189.88 = 1,563.88/x
  3. Step 3: Cross multiply
    5,459.80x = 8,189.88 × 1,563.88
  4. Step 4: Simplify right side
    5,459.80x = 12,807,989.53
  5. Step 5: Solve for x
    x = 12,807,989.53/5,459.80
  6. Step 6: Final answer
    x = 2,345.87

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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.