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Finding the Fourth Proportional to 3,758.76, 5,188.90 and 2,501.90

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Solution

The fourth proportional to 3,758.76, 5,188.90 and 2,501.90 is: 3,453.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.76 : 5,188.90 = 2,501.90 : x
  2. Step 2: Convert to fraction form
    3,758.76/5,188.90 = 2,501.90/x
  3. Step 3: Cross multiply
    3,758.76x = 5,188.90 × 2,501.90
  4. Step 4: Simplify right side
    3,758.76x = 12,982,108.91
  5. Step 5: Solve for x
    x = 12,982,108.91/3,758.76
  6. Step 6: Final answer
    x = 3,453.83

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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.