Home / 2,328.40-3,213.60-1,383.76

Finding the Fourth Proportional to 2,328.40, 3,213.60 and 1,383.76

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Solution

The fourth proportional to 2,328.40, 3,213.60 and 1,383.76 is: 1,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328.40 : 3,213.60 = 1,383.76 : x
  2. Step 2: Convert to fraction form
    2,328.40/3,213.60 = 1,383.76/x
  3. Step 3: Cross multiply
    2,328.40x = 3,213.60 × 1,383.76
  4. Step 4: Simplify right side
    2,328.40x = 4,446,851.14
  5. Step 5: Solve for x
    x = 4,446,851.14/2,328.40
  6. Step 6: Final answer
    x = 1,909.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.