Home / 1,391.07-2,071.10-1,371.69

Finding the Fourth Proportional to 1,391.07, 2,071.10 and 1,371.69

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Solution

The fourth proportional to 1,391.07, 2,071.10 and 1,371.69 is: 2,042.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.07 : 2,071.10 = 1,371.69 : x
  2. Step 2: Convert to fraction form
    1,391.07/2,071.10 = 1,371.69/x
  3. Step 3: Cross multiply
    1,391.07x = 2,071.10 × 1,371.69
  4. Step 4: Simplify right side
    1,391.07x = 2,840,900.30
  5. Step 5: Solve for x
    x = 2,840,900.30/1,391.07
  6. Step 6: Final answer
    x = 2,042.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.