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Finding the Fourth Proportional to 1,584.75, 2,186.86 and 876.41

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Solution

The fourth proportional to 1,584.75, 2,186.86 and 876.41 is: 1,209.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.75 : 2,186.86 = 876.41 : x
  2. Step 2: Convert to fraction form
    1,584.75/2,186.86 = 876.41/x
  3. Step 3: Cross multiply
    1,584.75x = 2,186.86 × 876.41
  4. Step 4: Simplify right side
    1,584.75x = 1,916,585.97
  5. Step 5: Solve for x
    x = 1,916,585.97/1,584.75
  6. Step 6: Final answer
    x = 1,209.39

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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.