Home / 2,187.47-3,285.12-2,099.38

Finding the Fourth Proportional to 2,187.47, 3,285.12 and 2,099.38

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Solution

The fourth proportional to 2,187.47, 3,285.12 and 2,099.38 is: 3,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.47 : 3,285.12 = 2,099.38 : x
  2. Step 2: Convert to fraction form
    2,187.47/3,285.12 = 2,099.38/x
  3. Step 3: Cross multiply
    2,187.47x = 3,285.12 × 2,099.38
  4. Step 4: Simplify right side
    2,187.47x = 6,896,715.23
  5. Step 5: Solve for x
    x = 6,896,715.23/2,187.47
  6. Step 6: Final answer
    x = 3,152.83

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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.