Home / 1,612.72-2,226.81-1,239.11

Finding the Fourth Proportional to 1,612.72, 2,226.81 and 1,239.11

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Solution

The fourth proportional to 1,612.72, 2,226.81 and 1,239.11 is: 1,710.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.72 : 2,226.81 = 1,239.11 : x
  2. Step 2: Convert to fraction form
    1,612.72/2,226.81 = 1,239.11/x
  3. Step 3: Cross multiply
    1,612.72x = 2,226.81 × 1,239.11
  4. Step 4: Simplify right side
    1,612.72x = 2,759,262.54
  5. Step 5: Solve for x
    x = 2,759,262.54/1,612.72
  6. Step 6: Final answer
    x = 1,710.94

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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.