Home / 3,929.94-5,421.51-2,512.92

Finding the Fourth Proportional to 3,929.94, 5,421.51 and 2,512.92

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Solution

The fourth proportional to 3,929.94, 5,421.51 and 2,512.92 is: 3,466.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.94 : 5,421.51 = 2,512.92 : x
  2. Step 2: Convert to fraction form
    3,929.94/5,421.51 = 2,512.92/x
  3. Step 3: Cross multiply
    3,929.94x = 5,421.51 × 2,512.92
  4. Step 4: Simplify right side
    3,929.94x = 13,623,820.91
  5. Step 5: Solve for x
    x = 13,623,820.91/3,929.94
  6. Step 6: Final answer
    x = 3,466.67

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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.