Home / 1,911.60-2,867.00-612.36

Finding the Fourth Proportional to 1,911.60, 2,867.00 and 612.36

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Solution

The fourth proportional to 1,911.60, 2,867.00 and 612.36 is: 918.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.60 : 2,867.00 = 612.36 : x
  2. Step 2: Convert to fraction form
    1,911.60/2,867.00 = 612.36/x
  3. Step 3: Cross multiply
    1,911.60x = 2,867.00 × 612.36
  4. Step 4: Simplify right side
    1,911.60x = 1,755,633.06
  5. Step 5: Solve for x
    x = 1,755,633.06/1,911.60
  6. Step 6: Final answer
    x = 918.41

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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.