Home / 3,621.39-5,428.38-1,427.10

Finding the Fourth Proportional to 3,621.39, 5,428.38 and 1,427.10

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Solution

The fourth proportional to 3,621.39, 5,428.38 and 1,427.10 is: 2,139.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.39 : 5,428.38 = 1,427.10 : x
  2. Step 2: Convert to fraction form
    3,621.39/5,428.38 = 1,427.10/x
  3. Step 3: Cross multiply
    3,621.39x = 5,428.38 × 1,427.10
  4. Step 4: Simplify right side
    3,621.39x = 7,746,841.10
  5. Step 5: Solve for x
    x = 7,746,841.10/3,621.39
  6. Step 6: Final answer
    x = 2,139.19

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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.