Home / 3,929.41-5,423.85-2,516.90

Finding the Fourth Proportional to 3,929.41, 5,423.85 and 2,516.90

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Solution

The fourth proportional to 3,929.41, 5,423.85 and 2,516.90 is: 3,474.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.41 : 5,423.85 = 2,516.90 : x
  2. Step 2: Convert to fraction form
    3,929.41/5,423.85 = 2,516.90/x
  3. Step 3: Cross multiply
    3,929.41x = 5,423.85 × 2,516.90
  4. Step 4: Simplify right side
    3,929.41x = 13,651,251.51
  5. Step 5: Solve for x
    x = 13,651,251.51/3,929.41
  6. Step 6: Final answer
    x = 3,474.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.