Home / 1,578.45-2,364.98-1,115.33

Finding the Fourth Proportional to 1,578.45, 2,364.98 and 1,115.33

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Solution

The fourth proportional to 1,578.45, 2,364.98 and 1,115.33 is: 1,671.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.45 : 2,364.98 = 1,115.33 : x
  2. Step 2: Convert to fraction form
    1,578.45/2,364.98 = 1,115.33/x
  3. Step 3: Cross multiply
    1,578.45x = 2,364.98 × 1,115.33
  4. Step 4: Simplify right side
    1,578.45x = 2,637,737.66
  5. Step 5: Solve for x
    x = 2,637,737.66/1,578.45
  6. Step 6: Final answer
    x = 1,671.09

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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.