Home / 1,426.01-2,139.21-451.88

Finding the Fourth Proportional to 1,426.01, 2,139.21 and 451.88

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Solution

The fourth proportional to 1,426.01, 2,139.21 and 451.88 is: 677.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.01 : 2,139.21 = 451.88 : x
  2. Step 2: Convert to fraction form
    1,426.01/2,139.21 = 451.88/x
  3. Step 3: Cross multiply
    1,426.01x = 2,139.21 × 451.88
  4. Step 4: Simplify right side
    1,426.01x = 966,663.54
  5. Step 5: Solve for x
    x = 966,663.54/1,426.01
  6. Step 6: Final answer
    x = 677.88

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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.