Home / 5,439.21-8,157.87-2,320.98

Finding the Fourth Proportional to 5,439.21, 8,157.87 and 2,320.98

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Solution

The fourth proportional to 5,439.21, 8,157.87 and 2,320.98 is: 3,481.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.21 : 8,157.87 = 2,320.98 : x
  2. Step 2: Convert to fraction form
    5,439.21/8,157.87 = 2,320.98/x
  3. Step 3: Cross multiply
    5,439.21x = 8,157.87 × 2,320.98
  4. Step 4: Simplify right side
    5,439.21x = 18,934,253.11
  5. Step 5: Solve for x
    x = 18,934,253.11/5,439.21
  6. Step 6: Final answer
    x = 3,481.07

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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.