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Finding the Fourth Proportional to 2,650.20, 3,657.12 and 1,471.20

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Solution

The fourth proportional to 2,650.20, 3,657.12 and 1,471.20 is: 2,030.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.20 : 3,657.12 = 1,471.20 : x
  2. Step 2: Convert to fraction form
    2,650.20/3,657.12 = 1,471.20/x
  3. Step 3: Cross multiply
    2,650.20x = 3,657.12 × 1,471.20
  4. Step 4: Simplify right side
    2,650.20x = 5,380,354.94
  5. Step 5: Solve for x
    x = 5,380,354.94/2,650.20
  6. Step 6: Final answer
    x = 2,030.17

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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.