Home / 2,981.80-4,468.92-1,338.28

Finding the Fourth Proportional to 2,981.80, 4,468.92 and 1,338.28

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Solution

The fourth proportional to 2,981.80, 4,468.92 and 1,338.28 is: 2,005.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.80 : 4,468.92 = 1,338.28 : x
  2. Step 2: Convert to fraction form
    2,981.80/4,468.92 = 1,338.28/x
  3. Step 3: Cross multiply
    2,981.80x = 4,468.92 × 1,338.28
  4. Step 4: Simplify right side
    2,981.80x = 5,980,666.26
  5. Step 5: Solve for x
    x = 5,980,666.26/2,981.80
  6. Step 6: Final answer
    x = 2,005.72

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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.