Home / 1,391.13-2,084.89-1,041.71

Finding the Fourth Proportional to 1,391.13, 2,084.89 and 1,041.71

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Solution

The fourth proportional to 1,391.13, 2,084.89 and 1,041.71 is: 1,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.13 : 2,084.89 = 1,041.71 : x
  2. Step 2: Convert to fraction form
    1,391.13/2,084.89 = 1,041.71/x
  3. Step 3: Cross multiply
    1,391.13x = 2,084.89 × 1,041.71
  4. Step 4: Simplify right side
    1,391.13x = 2,171,853.37
  5. Step 5: Solve for x
    x = 2,171,853.37/1,391.13
  6. Step 6: Final answer
    x = 1,561.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.