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Finding the Fourth Proportional to 3,500.80, 5,251.40 and 903.74

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Solution

The fourth proportional to 3,500.80, 5,251.40 and 903.74 is: 1,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.80 : 5,251.40 = 903.74 : x
  2. Step 2: Convert to fraction form
    3,500.80/5,251.40 = 903.74/x
  3. Step 3: Cross multiply
    3,500.80x = 5,251.40 × 903.74
  4. Step 4: Simplify right side
    3,500.80x = 4,745,900.24
  5. Step 5: Solve for x
    x = 4,745,900.24/3,500.80
  6. Step 6: Final answer
    x = 1,355.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.