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Finding the Fourth Proportional to 2,561.84, 3,845.43 and 2,271.20

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Solution

The fourth proportional to 2,561.84, 3,845.43 and 2,271.20 is: 3,409.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561.84 : 3,845.43 = 2,271.20 : x
  2. Step 2: Convert to fraction form
    2,561.84/3,845.43 = 2,271.20/x
  3. Step 3: Cross multiply
    2,561.84x = 3,845.43 × 2,271.20
  4. Step 4: Simplify right side
    2,561.84x = 8,733,740.62
  5. Step 5: Solve for x
    x = 8,733,740.62/2,561.84
  6. Step 6: Final answer
    x = 3,409.17

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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.