Home / 2,124.06-3,187.33-891.36

Finding the Fourth Proportional to 2,124.06, 3,187.33 and 891.36

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Solution

The fourth proportional to 2,124.06, 3,187.33 and 891.36 is: 1,337.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.06 : 3,187.33 = 891.36 : x
  2. Step 2: Convert to fraction form
    2,124.06/3,187.33 = 891.36/x
  3. Step 3: Cross multiply
    2,124.06x = 3,187.33 × 891.36
  4. Step 4: Simplify right side
    2,124.06x = 2,841,056.24
  5. Step 5: Solve for x
    x = 2,841,056.24/2,124.06
  6. Step 6: Final answer
    x = 1,337.56

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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.