Home / 3,431.63-5,143.53-1,578.92

Finding the Fourth Proportional to 3,431.63, 5,143.53 and 1,578.92

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Solution

The fourth proportional to 3,431.63, 5,143.53 and 1,578.92 is: 2,366.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.63 : 5,143.53 = 1,578.92 : x
  2. Step 2: Convert to fraction form
    3,431.63/5,143.53 = 1,578.92/x
  3. Step 3: Cross multiply
    3,431.63x = 5,143.53 × 1,578.92
  4. Step 4: Simplify right side
    3,431.63x = 8,121,196.67
  5. Step 5: Solve for x
    x = 8,121,196.67/3,431.63
  6. Step 6: Final answer
    x = 2,366.57

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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.