Home / 1,914.40-2,871.20-1,133.92

Finding the Fourth Proportional to 1,914.40, 2,871.20 and 1,133.92

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Solution

The fourth proportional to 1,914.40, 2,871.20 and 1,133.92 is: 1,700.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.40 : 2,871.20 = 1,133.92 : x
  2. Step 2: Convert to fraction form
    1,914.40/2,871.20 = 1,133.92/x
  3. Step 3: Cross multiply
    1,914.40x = 2,871.20 × 1,133.92
  4. Step 4: Simplify right side
    1,914.40x = 3,255,711.10
  5. Step 5: Solve for x
    x = 3,255,711.10/1,914.40
  6. Step 6: Final answer
    x = 1,700.64

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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.