Home / 3,622.39-5,429.88-1,428.10

Finding the Fourth Proportional to 3,622.39, 5,429.88 and 1,428.10

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Solution

The fourth proportional to 3,622.39, 5,429.88 and 1,428.10 is: 2,140.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,622.39 : 5,429.88 = 1,428.10 : x
  2. Step 2: Convert to fraction form
    3,622.39/5,429.88 = 1,428.10/x
  3. Step 3: Cross multiply
    3,622.39x = 5,429.88 × 1,428.10
  4. Step 4: Simplify right side
    3,622.39x = 7,754,411.63
  5. Step 5: Solve for x
    x = 7,754,411.63/3,622.39
  6. Step 6: Final answer
    x = 2,140.69

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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.