Home / 1,426.07-2,139.41-452.25

Finding the Fourth Proportional to 1,426.07, 2,139.41 and 452.25

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Solution

The fourth proportional to 1,426.07, 2,139.41 and 452.25 is: 678.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.07 : 2,139.41 = 452.25 : x
  2. Step 2: Convert to fraction form
    1,426.07/2,139.41 = 452.25/x
  3. Step 3: Cross multiply
    1,426.07x = 2,139.41 × 452.25
  4. Step 4: Simplify right side
    1,426.07x = 967,549.30
  5. Step 5: Solve for x
    x = 967,549.30/1,426.07
  6. Step 6: Final answer
    x = 678.47

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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.