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Finding the Fourth Proportional to 2,681.88, 3,698.99 and 2,150.17

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Solution

The fourth proportional to 2,681.88, 3,698.99 and 2,150.17 is: 2,965.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.88 : 3,698.99 = 2,150.17 : x
  2. Step 2: Convert to fraction form
    2,681.88/3,698.99 = 2,150.17/x
  3. Step 3: Cross multiply
    2,681.88x = 3,698.99 × 2,150.17
  4. Step 4: Simplify right side
    2,681.88x = 7,953,461.84
  5. Step 5: Solve for x
    x = 7,953,461.84/2,681.88
  6. Step 6: Final answer
    x = 2,965.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.