Home / 1,232.11-1,698.91-917.92

Finding the Fourth Proportional to 1,232.11, 1,698.91 and 917.92

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Solution

The fourth proportional to 1,232.11, 1,698.91 and 917.92 is: 1,265.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.11 : 1,698.91 = 917.92 : x
  2. Step 2: Convert to fraction form
    1,232.11/1,698.91 = 917.92/x
  3. Step 3: Cross multiply
    1,232.11x = 1,698.91 × 917.92
  4. Step 4: Simplify right side
    1,232.11x = 1,559,463.47
  5. Step 5: Solve for x
    x = 1,559,463.47/1,232.11
  6. Step 6: Final answer
    x = 1,265.69

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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.