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Finding the Fourth Proportional to 3,758.67, 5,187.51 and 2,187.63

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Solution

The fourth proportional to 3,758.67, 5,187.51 and 2,187.63 is: 3,019.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.67 : 5,187.51 = 2,187.63 : x
  2. Step 2: Convert to fraction form
    3,758.67/5,187.51 = 2,187.63/x
  3. Step 3: Cross multiply
    3,758.67x = 5,187.51 × 2,187.63
  4. Step 4: Simplify right side
    3,758.67x = 11,348,352.50
  5. Step 5: Solve for x
    x = 11,348,352.50/3,758.67
  6. Step 6: Final answer
    x = 3,019.25

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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.