Home / 3,107.28-4,660.95-917.52

Finding the Fourth Proportional to 3,107.28, 4,660.95 and 917.52

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Solution

The fourth proportional to 3,107.28, 4,660.95 and 917.52 is: 1,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.28 : 4,660.95 = 917.52 : x
  2. Step 2: Convert to fraction form
    3,107.28/4,660.95 = 917.52/x
  3. Step 3: Cross multiply
    3,107.28x = 4,660.95 × 917.52
  4. Step 4: Simplify right side
    3,107.28x = 4,276,514.84
  5. Step 5: Solve for x
    x = 4,276,514.84/3,107.28
  6. Step 6: Final answer
    x = 1,376.29

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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.