Home / 3,909.48-5,395.71-2,230.96

Finding the Fourth Proportional to 3,909.48, 5,395.71 and 2,230.96

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Solution

The fourth proportional to 3,909.48, 5,395.71 and 2,230.96 is: 3,079.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.48 : 5,395.71 = 2,230.96 : x
  2. Step 2: Convert to fraction form
    3,909.48/5,395.71 = 2,230.96/x
  3. Step 3: Cross multiply
    3,909.48x = 5,395.71 × 2,230.96
  4. Step 4: Simplify right side
    3,909.48x = 12,037,618.18
  5. Step 5: Solve for x
    x = 12,037,618.18/3,909.48
  6. Step 6: Final answer
    x = 3,079.08

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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.