Home / 1,133.20-1,685.30-1,046.80

Finding the Fourth Proportional to 1,133.20, 1,685.30 and 1,046.80

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Solution

The fourth proportional to 1,133.20, 1,685.30 and 1,046.80 is: 1,556.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.20 : 1,685.30 = 1,046.80 : x
  2. Step 2: Convert to fraction form
    1,133.20/1,685.30 = 1,046.80/x
  3. Step 3: Cross multiply
    1,133.20x = 1,685.30 × 1,046.80
  4. Step 4: Simplify right side
    1,133.20x = 1,764,172.04
  5. Step 5: Solve for x
    x = 1,764,172.04/1,133.20
  6. Step 6: Final answer
    x = 1,556.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.