Home / 3,126.79-4,688.29-2,151.82

Finding the Fourth Proportional to 3,126.79, 4,688.29 and 2,151.82

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Solution

The fourth proportional to 3,126.79, 4,688.29 and 2,151.82 is: 3,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.79 : 4,688.29 = 2,151.82 : x
  2. Step 2: Convert to fraction form
    3,126.79/4,688.29 = 2,151.82/x
  3. Step 3: Cross multiply
    3,126.79x = 4,688.29 × 2,151.82
  4. Step 4: Simplify right side
    3,126.79x = 10,088,356.19
  5. Step 5: Solve for x
    x = 10,088,356.19/3,126.79
  6. Step 6: Final answer
    x = 3,226.43

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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.