Home / 1,872.65-2,584.85-1,209.48

Finding the Fourth Proportional to 1,872.65, 2,584.85 and 1,209.48

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Solution

The fourth proportional to 1,872.65, 2,584.85 and 1,209.48 is: 1,669.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.65 : 2,584.85 = 1,209.48 : x
  2. Step 2: Convert to fraction form
    1,872.65/2,584.85 = 1,209.48/x
  3. Step 3: Cross multiply
    1,872.65x = 2,584.85 × 1,209.48
  4. Step 4: Simplify right side
    1,872.65x = 3,126,318.33
  5. Step 5: Solve for x
    x = 3,126,318.33/1,872.65
  6. Step 6: Final answer
    x = 1,669.47

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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.