Home / 2,071.53-2,859.03-1,187.28

Finding the Fourth Proportional to 2,071.53, 2,859.03 and 1,187.28

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Solution

The fourth proportional to 2,071.53, 2,859.03 and 1,187.28 is: 1,638.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.53 : 2,859.03 = 1,187.28 : x
  2. Step 2: Convert to fraction form
    2,071.53/2,859.03 = 1,187.28/x
  3. Step 3: Cross multiply
    2,071.53x = 2,859.03 × 1,187.28
  4. Step 4: Simplify right side
    2,071.53x = 3,394,469.14
  5. Step 5: Solve for x
    x = 3,394,469.14/2,071.53
  6. Step 6: Final answer
    x = 1,638.63

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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.