Home / 1,871.20-2,581.84-1,084.96

Finding the Fourth Proportional to 1,871.20, 2,581.84 and 1,084.96

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Solution

The fourth proportional to 1,871.20, 2,581.84 and 1,084.96 is: 1,497.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.20 : 2,581.84 = 1,084.96 : x
  2. Step 2: Convert to fraction form
    1,871.20/2,581.84 = 1,084.96/x
  3. Step 3: Cross multiply
    1,871.20x = 2,581.84 × 1,084.96
  4. Step 4: Simplify right side
    1,871.20x = 2,801,193.13
  5. Step 5: Solve for x
    x = 2,801,193.13/1,871.20
  6. Step 6: Final answer
    x = 1,497.00

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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.