Home / 6,401.79-8,835.57-3,886.02

Finding the Fourth Proportional to 6,401.79, 8,835.57 and 3,886.02

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Solution

The fourth proportional to 6,401.79, 8,835.57 and 3,886.02 is: 5,363.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,401.79 : 8,835.57 = 3,886.02 : x
  2. Step 2: Convert to fraction form
    6,401.79/8,835.57 = 3,886.02/x
  3. Step 3: Cross multiply
    6,401.79x = 8,835.57 × 3,886.02
  4. Step 4: Simplify right side
    6,401.79x = 34,335,201.73
  5. Step 5: Solve for x
    x = 34,335,201.73/6,401.79
  6. Step 6: Final answer
    x = 5,363.38

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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.