Home / 1,426.49-2,139.99-452.36

Finding the Fourth Proportional to 1,426.49, 2,139.99 and 452.36

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Solution

The fourth proportional to 1,426.49, 2,139.99 and 452.36 is: 678.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.49 : 2,139.99 = 452.36 : x
  2. Step 2: Convert to fraction form
    1,426.49/2,139.99 = 452.36/x
  3. Step 3: Cross multiply
    1,426.49x = 2,139.99 × 452.36
  4. Step 4: Simplify right side
    1,426.49x = 968,043.61
  5. Step 5: Solve for x
    x = 968,043.61/1,426.49
  6. Step 6: Final answer
    x = 678.62

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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.