Home / 3,689.19-5,091.80-2,428.02

Finding the Fourth Proportional to 3,689.19, 5,091.80 and 2,428.02

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Solution

The fourth proportional to 3,689.19, 5,091.80 and 2,428.02 is: 3,351.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.19 : 5,091.80 = 2,428.02 : x
  2. Step 2: Convert to fraction form
    3,689.19/5,091.80 = 2,428.02/x
  3. Step 3: Cross multiply
    3,689.19x = 5,091.80 × 2,428.02
  4. Step 4: Simplify right side
    3,689.19x = 12,362,980.10
  5. Step 5: Solve for x
    x = 12,362,980.10/3,689.19
  6. Step 6: Final answer
    x = 3,351.14

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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.