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Finding the Fourth Proportional to 3,753.62, 5,630.92 and 1,289.02

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Solution

The fourth proportional to 3,753.62, 5,630.92 and 1,289.02 is: 1,933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,753.62 : 5,630.92 = 1,289.02 : x
  2. Step 2: Convert to fraction form
    3,753.62/5,630.92 = 1,289.02/x
  3. Step 3: Cross multiply
    3,753.62x = 5,630.92 × 1,289.02
  4. Step 4: Simplify right side
    3,753.62x = 7,258,368.50
  5. Step 5: Solve for x
    x = 7,258,368.50/3,753.62
  6. Step 6: Final answer
    x = 1,933.70

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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.