Home / 5,412.28-8,118.42-2,809.84

Finding the Fourth Proportional to 5,412.28, 8,118.42 and 2,809.84

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Solution

The fourth proportional to 5,412.28, 8,118.42 and 2,809.84 is: 4,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.28 : 8,118.42 = 2,809.84 : x
  2. Step 2: Convert to fraction form
    5,412.28/8,118.42 = 2,809.84/x
  3. Step 3: Cross multiply
    5,412.28x = 8,118.42 × 2,809.84
  4. Step 4: Simplify right side
    5,412.28x = 22,811,461.25
  5. Step 5: Solve for x
    x = 22,811,461.25/5,412.28
  6. Step 6: Final answer
    x = 4,214.76

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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.