Home / 2,176.17-3,002.40-1,231.87

Finding the Fourth Proportional to 2,176.17, 3,002.40 and 1,231.87

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Solution

The fourth proportional to 2,176.17, 3,002.40 and 1,231.87 is: 1,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.17 : 3,002.40 = 1,231.87 : x
  2. Step 2: Convert to fraction form
    2,176.17/3,002.40 = 1,231.87/x
  3. Step 3: Cross multiply
    2,176.17x = 3,002.40 × 1,231.87
  4. Step 4: Simplify right side
    2,176.17x = 3,698,558.98
  5. Step 5: Solve for x
    x = 3,698,558.98/2,176.17
  6. Step 6: Final answer
    x = 1,699.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.