Home / 2,321.79-3,203.85-1,313.43

Finding the Fourth Proportional to 2,321.79, 3,203.85 and 1,313.43

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Solution

The fourth proportional to 2,321.79, 3,203.85 and 1,313.43 is: 1,812.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.79 : 3,203.85 = 1,313.43 : x
  2. Step 2: Convert to fraction form
    2,321.79/3,203.85 = 1,313.43/x
  3. Step 3: Cross multiply
    2,321.79x = 3,203.85 × 1,313.43
  4. Step 4: Simplify right side
    2,321.79x = 4,208,032.71
  5. Step 5: Solve for x
    x = 4,208,032.71/2,321.79
  6. Step 6: Final answer
    x = 1,812.41

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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.