Home / 1,908.20-2,633.10-1,162.20

Finding the Fourth Proportional to 1,908.20, 2,633.10 and 1,162.20

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Solution

The fourth proportional to 1,908.20, 2,633.10 and 1,162.20 is: 1,603.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.20 : 2,633.10 = 1,162.20 : x
  2. Step 2: Convert to fraction form
    1,908.20/2,633.10 = 1,162.20/x
  3. Step 3: Cross multiply
    1,908.20x = 2,633.10 × 1,162.20
  4. Step 4: Simplify right side
    1,908.20x = 3,060,188.82
  5. Step 5: Solve for x
    x = 3,060,188.82/1,908.20
  6. Step 6: Final answer
    x = 1,603.70

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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.