Home / 5,649.30-7,790.95-3,855.96

Finding the Fourth Proportional to 5,649.30, 7,790.95 and 3,855.96

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Solution

The fourth proportional to 5,649.30, 7,790.95 and 3,855.96 is: 5,317.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,649.30 : 7,790.95 = 3,855.96 : x
  2. Step 2: Convert to fraction form
    5,649.30/7,790.95 = 3,855.96/x
  3. Step 3: Cross multiply
    5,649.30x = 7,790.95 × 3,855.96
  4. Step 4: Simplify right side
    5,649.30x = 30,041,596.38
  5. Step 5: Solve for x
    x = 30,041,596.38/5,649.30
  6. Step 6: Final answer
    x = 5,317.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.