Home / 1,147.28-1,721.46-1,090.94

Finding the Fourth Proportional to 1,147.28, 1,721.46 and 1,090.94

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Solution

The fourth proportional to 1,147.28, 1,721.46 and 1,090.94 is: 1,636.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.28 : 1,721.46 = 1,090.94 : x
  2. Step 2: Convert to fraction form
    1,147.28/1,721.46 = 1,090.94/x
  3. Step 3: Cross multiply
    1,147.28x = 1,721.46 × 1,090.94
  4. Step 4: Simplify right side
    1,147.28x = 1,878,009.57
  5. Step 5: Solve for x
    x = 1,878,009.57/1,147.28
  6. Step 6: Final answer
    x = 1,636.92

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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.