Home / 2,312.69-3,447.11-2,177.90

Finding the Fourth Proportional to 2,312.69, 3,447.11 and 2,177.90

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Solution

The fourth proportional to 2,312.69, 3,447.11 and 2,177.90 is: 3,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.69 : 3,447.11 = 2,177.90 : x
  2. Step 2: Convert to fraction form
    2,312.69/3,447.11 = 2,177.90/x
  3. Step 3: Cross multiply
    2,312.69x = 3,447.11 × 2,177.90
  4. Step 4: Simplify right side
    2,312.69x = 7,507,474.93
  5. Step 5: Solve for x
    x = 7,507,474.93/2,312.69
  6. Step 6: Final answer
    x = 3,246.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.