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Finding the Fourth Proportional to 2,760.84, 3,809.70 and 2,238.12

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Solution

The fourth proportional to 2,760.84, 3,809.70 and 2,238.12 is: 3,088.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.84 : 3,809.70 = 2,238.12 : x
  2. Step 2: Convert to fraction form
    2,760.84/3,809.70 = 2,238.12/x
  3. Step 3: Cross multiply
    2,760.84x = 3,809.70 × 2,238.12
  4. Step 4: Simplify right side
    2,760.84x = 8,526,565.76
  5. Step 5: Solve for x
    x = 8,526,565.76/2,760.84
  6. Step 6: Final answer
    x = 3,088.40

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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.