Home / 3,178.60-4,767.90-2,693.80

Finding the Fourth Proportional to 3,178.60, 4,767.90 and 2,693.80

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Solution

The fourth proportional to 3,178.60, 4,767.90 and 2,693.80 is: 4,040.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.60 : 4,767.90 = 2,693.80 : x
  2. Step 2: Convert to fraction form
    3,178.60/4,767.90 = 2,693.80/x
  3. Step 3: Cross multiply
    3,178.60x = 4,767.90 × 2,693.80
  4. Step 4: Simplify right side
    3,178.60x = 12,843,769.02
  5. Step 5: Solve for x
    x = 12,843,769.02/3,178.60
  6. Step 6: Final answer
    x = 4,040.70

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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.