Home / 1,872.45-2,582.89-1,172.61

Finding the Fourth Proportional to 1,872.45, 2,582.89 and 1,172.61

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Solution

The fourth proportional to 1,872.45, 2,582.89 and 1,172.61 is: 1,617.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.45 : 2,582.89 = 1,172.61 : x
  2. Step 2: Convert to fraction form
    1,872.45/2,582.89 = 1,172.61/x
  3. Step 3: Cross multiply
    1,872.45x = 2,582.89 × 1,172.61
  4. Step 4: Simplify right side
    1,872.45x = 3,028,722.64
  5. Step 5: Solve for x
    x = 3,028,722.64/1,872.45
  6. Step 6: Final answer
    x = 1,617.52

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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.