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Finding the Fourth Proportional to 2,891.84, 4,337.92 and 1,872.32

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Solution

The fourth proportional to 2,891.84, 4,337.92 and 1,872.32 is: 2,808.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.84 : 4,337.92 = 1,872.32 : x
  2. Step 2: Convert to fraction form
    2,891.84/4,337.92 = 1,872.32/x
  3. Step 3: Cross multiply
    2,891.84x = 4,337.92 × 1,872.32
  4. Step 4: Simplify right side
    2,891.84x = 8,121,974.37
  5. Step 5: Solve for x
    x = 8,121,974.37/2,891.84
  6. Step 6: Final answer
    x = 2,808.58

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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.