Home / 5,179.60-7,769.40-2,101.60

Finding the Fourth Proportional to 5,179.60, 7,769.40 and 2,101.60

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Solution

The fourth proportional to 5,179.60, 7,769.40 and 2,101.60 is: 3,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.60 : 7,769.40 = 2,101.60 : x
  2. Step 2: Convert to fraction form
    5,179.60/7,769.40 = 2,101.60/x
  3. Step 3: Cross multiply
    5,179.60x = 7,769.40 × 2,101.60
  4. Step 4: Simplify right side
    5,179.60x = 16,328,171.04
  5. Step 5: Solve for x
    x = 16,328,171.04/5,179.60
  6. Step 6: Final answer
    x = 3,152.40

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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.