Home / 3,126-4,313.98-1,729.02

Finding the Fourth Proportional to 3,126, 4,313.98 and 1,729.02

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Solution

The fourth proportional to 3,126, 4,313.98 and 1,729.02 is: 2,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126 : 4,313.98 = 1,729.02 : x
  2. Step 2: Convert to fraction form
    3,126/4,313.98 = 1,729.02/x
  3. Step 3: Cross multiply
    3,126x = 4,313.98 × 1,729.02
  4. Step 4: Simplify right side
    3,126x = 7,458,957.70
  5. Step 5: Solve for x
    x = 7,458,957.70/3,126
  6. Step 6: Final answer
    x = 2,386.10

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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.