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Finding the Fourth Proportional to 1,184.46, 1,783.56 and 878.49

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Solution

The fourth proportional to 1,184.46, 1,783.56 and 878.49 is: 1,322.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.46 : 1,783.56 = 878.49 : x
  2. Step 2: Convert to fraction form
    1,184.46/1,783.56 = 878.49/x
  3. Step 3: Cross multiply
    1,184.46x = 1,783.56 × 878.49
  4. Step 4: Simplify right side
    1,184.46x = 1,566,839.62
  5. Step 5: Solve for x
    x = 1,566,839.62/1,184.46
  6. Step 6: Final answer
    x = 1,322.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.