Home / 2,403.68-3,320.24-1,939.68

Finding the Fourth Proportional to 2,403.68, 3,320.24 and 1,939.68

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Solution

The fourth proportional to 2,403.68, 3,320.24 and 1,939.68 is: 2,679.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,403.68 : 3,320.24 = 1,939.68 : x
  2. Step 2: Convert to fraction form
    2,403.68/3,320.24 = 1,939.68/x
  3. Step 3: Cross multiply
    2,403.68x = 3,320.24 × 1,939.68
  4. Step 4: Simplify right side
    2,403.68x = 6,440,203.12
  5. Step 5: Solve for x
    x = 6,440,203.12/2,403.68
  6. Step 6: Final answer
    x = 2,679.31

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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.