Home / 1,929.88-2,663.45-1,090.72

Finding the Fourth Proportional to 1,929.88, 2,663.45 and 1,090.72

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Solution

The fourth proportional to 1,929.88, 2,663.45 and 1,090.72 is: 1,505.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.88 : 2,663.45 = 1,090.72 : x
  2. Step 2: Convert to fraction form
    1,929.88/2,663.45 = 1,090.72/x
  3. Step 3: Cross multiply
    1,929.88x = 2,663.45 × 1,090.72
  4. Step 4: Simplify right side
    1,929.88x = 2,905,078.18
  5. Step 5: Solve for x
    x = 2,905,078.18/1,929.88
  6. Step 6: Final answer
    x = 1,505.32

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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.