Home / 1,293.45-1,939.40-460.11

Finding the Fourth Proportional to 1,293.45, 1,939.40 and 460.11

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Solution

The fourth proportional to 1,293.45, 1,939.40 and 460.11 is: 689.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.45 : 1,939.40 = 460.11 : x
  2. Step 2: Convert to fraction form
    1,293.45/1,939.40 = 460.11/x
  3. Step 3: Cross multiply
    1,293.45x = 1,939.40 × 460.11
  4. Step 4: Simplify right side
    1,293.45x = 892,337.33
  5. Step 5: Solve for x
    x = 892,337.33/1,293.45
  6. Step 6: Final answer
    x = 689.89

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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.