Home / 2,320.88-3,203.63-1,389.38

Finding the Fourth Proportional to 2,320.88, 3,203.63 and 1,389.38

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Solution

The fourth proportional to 2,320.88, 3,203.63 and 1,389.38 is: 1,917.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.88 : 3,203.63 = 1,389.38 : x
  2. Step 2: Convert to fraction form
    2,320.88/3,203.63 = 1,389.38/x
  3. Step 3: Cross multiply
    2,320.88x = 3,203.63 × 1,389.38
  4. Step 4: Simplify right side
    2,320.88x = 4,451,036.48
  5. Step 5: Solve for x
    x = 4,451,036.48/2,320.88
  6. Step 6: Final answer
    x = 1,917.83

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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.