Home / 2,072.08-2,859.14-1,187.72

Finding the Fourth Proportional to 2,072.08, 2,859.14 and 1,187.72

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Solution

The fourth proportional to 2,072.08, 2,859.14 and 1,187.72 is: 1,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.08 : 2,859.14 = 1,187.72 : x
  2. Step 2: Convert to fraction form
    2,072.08/2,859.14 = 1,187.72/x
  3. Step 3: Cross multiply
    2,072.08x = 2,859.14 × 1,187.72
  4. Step 4: Simplify right side
    2,072.08x = 3,395,857.76
  5. Step 5: Solve for x
    x = 3,395,857.76/2,072.08
  6. Step 6: Final answer
    x = 1,638.86

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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.