Home / 3,428.52-5,142.78-1,870.08

Finding the Fourth Proportional to 3,428.52, 5,142.78 and 1,870.08

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Solution

The fourth proportional to 3,428.52, 5,142.78 and 1,870.08 is: 2,805.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.52 : 5,142.78 = 1,870.08 : x
  2. Step 2: Convert to fraction form
    3,428.52/5,142.78 = 1,870.08/x
  3. Step 3: Cross multiply
    3,428.52x = 5,142.78 × 1,870.08
  4. Step 4: Simplify right side
    3,428.52x = 9,617,410.02
  5. Step 5: Solve for x
    x = 9,617,410.02/3,428.52
  6. Step 6: Final answer
    x = 2,805.12

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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.