Home / 3,919.59-5,405.23-2,646.27

Finding the Fourth Proportional to 3,919.59, 5,405.23 and 2,646.27

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Solution

The fourth proportional to 3,919.59, 5,405.23 and 2,646.27 is: 3,649.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.59 : 5,405.23 = 2,646.27 : x
  2. Step 2: Convert to fraction form
    3,919.59/5,405.23 = 2,646.27/x
  3. Step 3: Cross multiply
    3,919.59x = 5,405.23 × 2,646.27
  4. Step 4: Simplify right side
    3,919.59x = 14,303,701.30
  5. Step 5: Solve for x
    x = 14,303,701.30/3,919.59
  6. Step 6: Final answer
    x = 3,649.29

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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.