Home / 5,455.40-8,177.70-2,679.80

Finding the Fourth Proportional to 5,455.40, 8,177.70 and 2,679.80

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Solution

The fourth proportional to 5,455.40, 8,177.70 and 2,679.80 is: 4,017.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.40 : 8,177.70 = 2,679.80 : x
  2. Step 2: Convert to fraction form
    5,455.40/8,177.70 = 2,679.80/x
  3. Step 3: Cross multiply
    5,455.40x = 8,177.70 × 2,679.80
  4. Step 4: Simplify right side
    5,455.40x = 21,914,600.46
  5. Step 5: Solve for x
    x = 21,914,600.46/5,455.40
  6. Step 6: Final answer
    x = 4,017.05

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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.