Home / 4,216.40-6,329.80-2,656.40

Finding the Fourth Proportional to 4,216.40, 6,329.80 and 2,656.40

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Solution

The fourth proportional to 4,216.40, 6,329.80 and 2,656.40 is: 3,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,216.40 : 6,329.80 = 2,656.40 : x
  2. Step 2: Convert to fraction form
    4,216.40/6,329.80 = 2,656.40/x
  3. Step 3: Cross multiply
    4,216.40x = 6,329.80 × 2,656.40
  4. Step 4: Simplify right side
    4,216.40x = 16,814,480.72
  5. Step 5: Solve for x
    x = 16,814,480.72/4,216.40
  6. Step 6: Final answer
    x = 3,987.88

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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.