Home / 1,578.88-2,356.97-1,253.80

Finding the Fourth Proportional to 1,578.88, 2,356.97 and 1,253.80

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Solution

The fourth proportional to 1,578.88, 2,356.97 and 1,253.80 is: 1,871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.88 : 2,356.97 = 1,253.80 : x
  2. Step 2: Convert to fraction form
    1,578.88/2,356.97 = 1,253.80/x
  3. Step 3: Cross multiply
    1,578.88x = 2,356.97 × 1,253.80
  4. Step 4: Simplify right side
    1,578.88x = 2,955,168.99
  5. Step 5: Solve for x
    x = 2,955,168.99/1,578.88
  6. Step 6: Final answer
    x = 1,871.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.