Home / 2,313.60-3,478.40-1,996.80

Finding the Fourth Proportional to 2,313.60, 3,478.40 and 1,996.80

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Solution

The fourth proportional to 2,313.60, 3,478.40 and 1,996.80 is: 3,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.60 : 3,478.40 = 1,996.80 : x
  2. Step 2: Convert to fraction form
    2,313.60/3,478.40 = 1,996.80/x
  3. Step 3: Cross multiply
    2,313.60x = 3,478.40 × 1,996.80
  4. Step 4: Simplify right side
    2,313.60x = 6,945,669.12
  5. Step 5: Solve for x
    x = 6,945,669.12/2,313.60
  6. Step 6: Final answer
    x = 3,002.10

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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.