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Finding the Fourth Proportional to 2,184.72, 3,276.84 and 723.84

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Solution

The fourth proportional to 2,184.72, 3,276.84 and 723.84 is: 1,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,184.72 : 3,276.84 = 723.84 : x
  2. Step 2: Convert to fraction form
    2,184.72/3,276.84 = 723.84/x
  3. Step 3: Cross multiply
    2,184.72x = 3,276.84 × 723.84
  4. Step 4: Simplify right side
    2,184.72x = 2,371,907.87
  5. Step 5: Solve for x
    x = 2,371,907.87/2,184.72
  6. Step 6: Final answer
    x = 1,085.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.