Home / 1,426.18-2,139.45-452.29

Finding the Fourth Proportional to 1,426.18, 2,139.45 and 452.29

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Solution

The fourth proportional to 1,426.18, 2,139.45 and 452.29 is: 678.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.18 : 2,139.45 = 452.29 : x
  2. Step 2: Convert to fraction form
    1,426.18/2,139.45 = 452.29/x
  3. Step 3: Cross multiply
    1,426.18x = 2,139.45 × 452.29
  4. Step 4: Simplify right side
    1,426.18x = 967,651.84
  5. Step 5: Solve for x
    x = 967,651.84/1,426.18
  6. Step 6: Final answer
    x = 678.49

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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.