Home / 4,178.40-6,267.60-3,400.80

Finding the Fourth Proportional to 4,178.40, 6,267.60 and 3,400.80

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Solution

The fourth proportional to 4,178.40, 6,267.60 and 3,400.80 is: 5,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.40 : 6,267.60 = 3,400.80 : x
  2. Step 2: Convert to fraction form
    4,178.40/6,267.60 = 3,400.80/x
  3. Step 3: Cross multiply
    4,178.40x = 6,267.60 × 3,400.80
  4. Step 4: Simplify right side
    4,178.40x = 21,314,854.08
  5. Step 5: Solve for x
    x = 21,314,854.08/4,178.40
  6. Step 6: Final answer
    x = 5,101.20

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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.