Home / 1,291.08-1,936.46-469.32

Finding the Fourth Proportional to 1,291.08, 1,936.46 and 469.32

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Solution

The fourth proportional to 1,291.08, 1,936.46 and 469.32 is: 703.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.08 : 1,936.46 = 469.32 : x
  2. Step 2: Convert to fraction form
    1,291.08/1,936.46 = 469.32/x
  3. Step 3: Cross multiply
    1,291.08x = 1,936.46 × 469.32
  4. Step 4: Simplify right side
    1,291.08x = 908,819.41
  5. Step 5: Solve for x
    x = 908,819.41/1,291.08
  6. Step 6: Final answer
    x = 703.92

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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.