Home / 5,438.40-8,155.52-1,739.84

Finding the Fourth Proportional to 5,438.40, 8,155.52 and 1,739.84

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Solution

The fourth proportional to 5,438.40, 8,155.52 and 1,739.84 is: 2,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.40 : 8,155.52 = 1,739.84 : x
  2. Step 2: Convert to fraction form
    5,438.40/8,155.52 = 1,739.84/x
  3. Step 3: Cross multiply
    5,438.40x = 8,155.52 × 1,739.84
  4. Step 4: Simplify right side
    5,438.40x = 14,189,299.92
  5. Step 5: Solve for x
    x = 14,189,299.92/5,438.40
  6. Step 6: Final answer
    x = 2,609.09

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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.