Home / 1,911.34-2,867.28-612.37

Finding the Fourth Proportional to 1,911.34, 2,867.28 and 612.37

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Solution

The fourth proportional to 1,911.34, 2,867.28 and 612.37 is: 918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.34 : 2,867.28 = 612.37 : x
  2. Step 2: Convert to fraction form
    1,911.34/2,867.28 = 612.37/x
  3. Step 3: Cross multiply
    1,911.34x = 2,867.28 × 612.37
  4. Step 4: Simplify right side
    1,911.34x = 1,755,836.25
  5. Step 5: Solve for x
    x = 1,755,836.25/1,911.34
  6. Step 6: Final answer
    x = 918.64

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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.