Home / 1,872.73-2,582.90-1,209.74

Finding the Fourth Proportional to 1,872.73, 2,582.90 and 1,209.74

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Solution

The fourth proportional to 1,872.73, 2,582.90 and 1,209.74 is: 1,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.73 : 2,582.90 = 1,209.74 : x
  2. Step 2: Convert to fraction form
    1,872.73/2,582.90 = 1,209.74/x
  3. Step 3: Cross multiply
    1,872.73x = 2,582.90 × 1,209.74
  4. Step 4: Simplify right side
    1,872.73x = 3,124,637.45
  5. Step 5: Solve for x
    x = 3,124,637.45/1,872.73
  6. Step 6: Final answer
    x = 1,668.50

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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.