Home / 1,426.36-2,139.56-452.47

Finding the Fourth Proportional to 1,426.36, 2,139.56 and 452.47

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Solution

The fourth proportional to 1,426.36, 2,139.56 and 452.47 is: 678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.36 : 2,139.56 = 452.47 : x
  2. Step 2: Convert to fraction form
    1,426.36/2,139.56 = 452.47/x
  3. Step 3: Cross multiply
    1,426.36x = 2,139.56 × 452.47
  4. Step 4: Simplify right side
    1,426.36x = 968,086.71
  5. Step 5: Solve for x
    x = 968,086.71/1,426.36
  6. Step 6: Final answer
    x = 678.71

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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.