Home / 1,578.60-2,364.80-1,286.46

Finding the Fourth Proportional to 1,578.60, 2,364.80 and 1,286.46

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Solution

The fourth proportional to 1,578.60, 2,364.80 and 1,286.46 is: 1,927.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.60 : 2,364.80 = 1,286.46 : x
  2. Step 2: Convert to fraction form
    1,578.60/2,364.80 = 1,286.46/x
  3. Step 3: Cross multiply
    1,578.60x = 2,364.80 × 1,286.46
  4. Step 4: Simplify right side
    1,578.60x = 3,042,214.18
  5. Step 5: Solve for x
    x = 3,042,214.18/1,578.60
  6. Step 6: Final answer
    x = 1,927.16

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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.