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Finding the Fourth Proportional to 3,700.88, 5,129.30 and 3,631.76

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Solution

The fourth proportional to 3,700.88, 5,129.30 and 3,631.76 is: 5,033.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,700.88 : 5,129.30 = 3,631.76 : x
  2. Step 2: Convert to fraction form
    3,700.88/5,129.30 = 3,631.76/x
  3. Step 3: Cross multiply
    3,700.88x = 5,129.30 × 3,631.76
  4. Step 4: Simplify right side
    3,700.88x = 18,628,386.57
  5. Step 5: Solve for x
    x = 18,628,386.57/3,700.88
  6. Step 6: Final answer
    x = 5,033.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.