Home / 5,817.30-8,720.78-2,118.84

Finding the Fourth Proportional to 5,817.30, 8,720.78 and 2,118.84

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Solution

The fourth proportional to 5,817.30, 8,720.78 and 2,118.84 is: 3,176.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,817.30 : 8,720.78 = 2,118.84 : x
  2. Step 2: Convert to fraction form
    5,817.30/8,720.78 = 2,118.84/x
  3. Step 3: Cross multiply
    5,817.30x = 8,720.78 × 2,118.84
  4. Step 4: Simplify right side
    5,817.30x = 18,477,883.30
  5. Step 5: Solve for x
    x = 18,477,883.30/5,817.30
  6. Step 6: Final answer
    x = 3,176.37

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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.