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Finding the Fourth Proportional to 1,463.90, 2,021.56 and 940.84

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Solution

The fourth proportional to 1,463.90, 2,021.56 and 940.84 is: 1,299.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,463.90 : 2,021.56 = 940.84 : x
  2. Step 2: Convert to fraction form
    1,463.90/2,021.56 = 940.84/x
  3. Step 3: Cross multiply
    1,463.90x = 2,021.56 × 940.84
  4. Step 4: Simplify right side
    1,463.90x = 1,901,964.51
  5. Step 5: Solve for x
    x = 1,901,964.51/1,463.90
  6. Step 6: Final answer
    x = 1,299.24

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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.