Home / 2,430.92-3,354.78-1,383.20

Finding the Fourth Proportional to 2,430.92, 3,354.78 and 1,383.20

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Solution

The fourth proportional to 2,430.92, 3,354.78 and 1,383.20 is: 1,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.92 : 3,354.78 = 1,383.20 : x
  2. Step 2: Convert to fraction form
    2,430.92/3,354.78 = 1,383.20/x
  3. Step 3: Cross multiply
    2,430.92x = 3,354.78 × 1,383.20
  4. Step 4: Simplify right side
    2,430.92x = 4,640,331.70
  5. Step 5: Solve for x
    x = 4,640,331.70/2,430.92
  6. Step 6: Final answer
    x = 1,908.88

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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.