Home / 5,777.40-8,660.90-2,078.76

Finding the Fourth Proportional to 5,777.40, 8,660.90 and 2,078.76

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Solution

The fourth proportional to 5,777.40, 8,660.90 and 2,078.76 is: 3,116.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,777.40 : 8,660.90 = 2,078.76 : x
  2. Step 2: Convert to fraction form
    5,777.40/8,660.90 = 2,078.76/x
  3. Step 3: Cross multiply
    5,777.40x = 8,660.90 × 2,078.76
  4. Step 4: Simplify right side
    5,777.40x = 18,003,937.68
  5. Step 5: Solve for x
    x = 18,003,937.68/5,777.40
  6. Step 6: Final answer
    x = 3,116.27

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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.