Home / 1,904.10-2,628.09-1,239.79

Finding the Fourth Proportional to 1,904.10, 2,628.09 and 1,239.79

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Solution

The fourth proportional to 1,904.10, 2,628.09 and 1,239.79 is: 1,711.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,904.10 : 2,628.09 = 1,239.79 : x
  2. Step 2: Convert to fraction form
    1,904.10/2,628.09 = 1,239.79/x
  3. Step 3: Cross multiply
    1,904.10x = 2,628.09 × 1,239.79
  4. Step 4: Simplify right side
    1,904.10x = 3,258,279.70
  5. Step 5: Solve for x
    x = 3,258,279.70/1,904.10
  6. Step 6: Final answer
    x = 1,711.19

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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.