Home / 2,125.02-3,187.71-826.50

Finding the Fourth Proportional to 2,125.02, 3,187.71 and 826.50

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Solution

The fourth proportional to 2,125.02, 3,187.71 and 826.50 is: 1,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.02 : 3,187.71 = 826.50 : x
  2. Step 2: Convert to fraction form
    2,125.02/3,187.71 = 826.50/x
  3. Step 3: Cross multiply
    2,125.02x = 3,187.71 × 826.50
  4. Step 4: Simplify right side
    2,125.02x = 2,634,642.32
  5. Step 5: Solve for x
    x = 2,634,642.32/2,125.02
  6. Step 6: Final answer
    x = 1,239.82

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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.