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Finding the Fourth Proportional to 3,521.08, 5,281.74 and 1,983.16

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Solution

The fourth proportional to 3,521.08, 5,281.74 and 1,983.16 is: 2,974.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.08 : 5,281.74 = 1,983.16 : x
  2. Step 2: Convert to fraction form
    3,521.08/5,281.74 = 1,983.16/x
  3. Step 3: Cross multiply
    3,521.08x = 5,281.74 × 1,983.16
  4. Step 4: Simplify right side
    3,521.08x = 10,474,535.50
  5. Step 5: Solve for x
    x = 10,474,535.50/3,521.08
  6. Step 6: Final answer
    x = 2,974.81

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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.