Home / 5,449.24-8,174.40-1,985.68

Finding the Fourth Proportional to 5,449.24, 8,174.40 and 1,985.68

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Solution

The fourth proportional to 5,449.24, 8,174.40 and 1,985.68 is: 2,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,449.24 : 8,174.40 = 1,985.68 : x
  2. Step 2: Convert to fraction form
    5,449.24/8,174.40 = 1,985.68/x
  3. Step 3: Cross multiply
    5,449.24x = 8,174.40 × 1,985.68
  4. Step 4: Simplify right side
    5,449.24x = 16,231,742.59
  5. Step 5: Solve for x
    x = 16,231,742.59/5,449.24
  6. Step 6: Final answer
    x = 2,978.72

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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.