Home / 2,578.07-3,865.79-934.18

Finding the Fourth Proportional to 2,578.07, 3,865.79 and 934.18

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Solution

The fourth proportional to 2,578.07, 3,865.79 and 934.18 is: 1,400.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.07 : 3,865.79 = 934.18 : x
  2. Step 2: Convert to fraction form
    2,578.07/3,865.79 = 934.18/x
  3. Step 3: Cross multiply
    2,578.07x = 3,865.79 × 934.18
  4. Step 4: Simplify right side
    2,578.07x = 3,611,336.37
  5. Step 5: Solve for x
    x = 3,611,336.37/2,578.07
  6. Step 6: Final answer
    x = 1,400.79

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1.5x scale

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.