Home / 2,383.31-3,289.36-1,389.17

Finding the Fourth Proportional to 2,383.31, 3,289.36 and 1,389.17

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Solution

The fourth proportional to 2,383.31, 3,289.36 and 1,389.17 is: 1,917.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,383.31 : 3,289.36 = 1,389.17 : x
  2. Step 2: Convert to fraction form
    2,383.31/3,289.36 = 1,389.17/x
  3. Step 3: Cross multiply
    2,383.31x = 3,289.36 × 1,389.17
  4. Step 4: Simplify right side
    2,383.31x = 4,569,463.78
  5. Step 5: Solve for x
    x = 4,569,463.78/2,383.31
  6. Step 6: Final answer
    x = 1,917.28

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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.