Home / 1,388.92-2,090.35-1,044.04

Finding the Fourth Proportional to 1,388.92, 2,090.35 and 1,044.04

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Solution

The fourth proportional to 1,388.92, 2,090.35 and 1,044.04 is: 1,571.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.92 : 2,090.35 = 1,044.04 : x
  2. Step 2: Convert to fraction form
    1,388.92/2,090.35 = 1,044.04/x
  3. Step 3: Cross multiply
    1,388.92x = 2,090.35 × 1,044.04
  4. Step 4: Simplify right side
    1,388.92x = 2,182,409.01
  5. Step 5: Solve for x
    x = 2,182,409.01/1,388.92
  6. Step 6: Final answer
    x = 1,571.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.