Home / 6,428.72-8,873.06-3,910.29

Finding the Fourth Proportional to 6,428.72, 8,873.06 and 3,910.29

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Solution

The fourth proportional to 6,428.72, 8,873.06 and 3,910.29 is: 5,397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.72 : 8,873.06 = 3,910.29 : x
  2. Step 2: Convert to fraction form
    6,428.72/8,873.06 = 3,910.29/x
  3. Step 3: Cross multiply
    6,428.72x = 8,873.06 × 3,910.29
  4. Step 4: Simplify right side
    6,428.72x = 34,696,218.24
  5. Step 5: Solve for x
    x = 34,696,218.24/6,428.72
  6. Step 6: Final answer
    x = 5,397.07

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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.