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Finding the Fourth Proportional to 3,609.96, 4,981.96 and 2,038.20

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Solution

The fourth proportional to 3,609.96, 4,981.96 and 2,038.20 is: 2,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.96 : 4,981.96 = 2,038.20 : x
  2. Step 2: Convert to fraction form
    3,609.96/4,981.96 = 2,038.20/x
  3. Step 3: Cross multiply
    3,609.96x = 4,981.96 × 2,038.20
  4. Step 4: Simplify right side
    3,609.96x = 10,154,230.87
  5. Step 5: Solve for x
    x = 10,154,230.87/3,609.96
  6. Step 6: Final answer
    x = 2,812.84

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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.