Home / 2,007.80-3,011.70-1,643.30

Finding the Fourth Proportional to 2,007.80, 3,011.70 and 1,643.30

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Solution

The fourth proportional to 2,007.80, 3,011.70 and 1,643.30 is: 2,464.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.80 : 3,011.70 = 1,643.30 : x
  2. Step 2: Convert to fraction form
    2,007.80/3,011.70 = 1,643.30/x
  3. Step 3: Cross multiply
    2,007.80x = 3,011.70 × 1,643.30
  4. Step 4: Simplify right side
    2,007.80x = 4,949,126.61
  5. Step 5: Solve for x
    x = 4,949,126.61/2,007.80
  6. Step 6: Final answer
    x = 2,464.95

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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.