Home / 3,651.35-5,038.87-1,972.76

Finding the Fourth Proportional to 3,651.35, 5,038.87 and 1,972.76

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Solution

The fourth proportional to 3,651.35, 5,038.87 and 1,972.76 is: 2,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.35 : 5,038.87 = 1,972.76 : x
  2. Step 2: Convert to fraction form
    3,651.35/5,038.87 = 1,972.76/x
  3. Step 3: Cross multiply
    3,651.35x = 5,038.87 × 1,972.76
  4. Step 4: Simplify right side
    3,651.35x = 9,940,446.12
  5. Step 5: Solve for x
    x = 9,940,446.12/3,651.35
  6. Step 6: Final answer
    x = 2,722.40

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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.